Home / 15,711.18-21,686.48-10,061.15

Finding the Fourth Proportional to 15,711.18, 21,686.48 and 10,061.15

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Solution

The fourth proportional to 15,711.18, 21,686.48 and 10,061.15 is: 13,887.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.18 : 21,686.48 = 10,061.15 : x
  2. Step 2: Convert to fraction form
    15,711.18/21,686.48 = 10,061.15/x
  3. Step 3: Cross multiply
    15,711.18x = 21,686.48 × 10,061.15
  4. Step 4: Simplify right side
    15,711.18x = 218,190,928.25
  5. Step 5: Solve for x
    x = 218,190,928.25/15,711.18
  6. Step 6: Final answer
    x = 13,887.62

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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.