Home / 10,657.15-15,990.33-5,721.02

Finding the Fourth Proportional to 10,657.15, 15,990.33 and 5,721.02

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Solution

The fourth proportional to 10,657.15, 15,990.33 and 5,721.02 is: 8,584.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657.15 : 15,990.33 = 5,721.02 : x
  2. Step 2: Convert to fraction form
    10,657.15/15,990.33 = 5,721.02/x
  3. Step 3: Cross multiply
    10,657.15x = 15,990.33 × 5,721.02
  4. Step 4: Simplify right side
    10,657.15x = 91,480,969.13
  5. Step 5: Solve for x
    x = 91,480,969.13/10,657.15
  6. Step 6: Final answer
    x = 8,584.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.