Home / 18,378.76-25,362.55-9,995.26

Finding the Fourth Proportional to 18,378.76, 25,362.55 and 9,995.26

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Solution

The fourth proportional to 18,378.76, 25,362.55 and 9,995.26 is: 13,793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.76 : 25,362.55 = 9,995.26 : x
  2. Step 2: Convert to fraction form
    18,378.76/25,362.55 = 9,995.26/x
  3. Step 3: Cross multiply
    18,378.76x = 25,362.55 × 9,995.26
  4. Step 4: Simplify right side
    18,378.76x = 253,505,281.51
  5. Step 5: Solve for x
    x = 253,505,281.51/18,378.76
  6. Step 6: Final answer
    x = 13,793.38

Related Problems

Find fourth proportional to 9,189.38, 12,681.28 and 4,997.63
Half scale
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Double scale
Find fourth proportional to 18,379.76, 25,363.93 and 9,996.26
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.