Home / 18,378.58-25,362.45-9,995.06

Finding the Fourth Proportional to 18,378.58, 25,362.45 and 9,995.06

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Solution

The fourth proportional to 18,378.58, 25,362.45 and 9,995.06 is: 13,793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.58 : 25,362.45 = 9,995.06 : x
  2. Step 2: Convert to fraction form
    18,378.58/25,362.45 = 9,995.06/x
  3. Step 3: Cross multiply
    18,378.58x = 25,362.45 × 9,995.06
  4. Step 4: Simplify right side
    18,378.58x = 253,499,209.50
  5. Step 5: Solve for x
    x = 253,499,209.50/18,378.58
  6. Step 6: Final answer
    x = 13,793.19

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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.