Home / 30,810.04-42,528.74-18,234.76

Finding the Fourth Proportional to 30,810.04, 42,528.74 and 18,234.76

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Solution

The fourth proportional to 30,810.04, 42,528.74 and 18,234.76 is: 25,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.04 : 42,528.74 = 18,234.76 : x
  2. Step 2: Convert to fraction form
    30,810.04/42,528.74 = 18,234.76/x
  3. Step 3: Cross multiply
    30,810.04x = 42,528.74 × 18,234.76
  4. Step 4: Simplify right side
    30,810.04x = 775,501,367.00
  5. Step 5: Solve for x
    x = 775,501,367.00/30,810.04
  6. Step 6: Final answer
    x = 25,170.41

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Half scale
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Double scale
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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.