Home / 18,355.50-25,331.13-9,972.54

Finding the Fourth Proportional to 18,355.50, 25,331.13 and 9,972.54

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Solution

The fourth proportional to 18,355.50, 25,331.13 and 9,972.54 is: 13,762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.50 : 25,331.13 = 9,972.54 : x
  2. Step 2: Convert to fraction form
    18,355.50/25,331.13 = 9,972.54/x
  3. Step 3: Cross multiply
    18,355.50x = 25,331.13 × 9,972.54
  4. Step 4: Simplify right side
    18,355.50x = 252,615,707.17
  5. Step 5: Solve for x
    x = 252,615,707.17/18,355.50
  6. Step 6: Final answer
    x = 13,762.40

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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.