Home / 10,487.17-15,721.39-3,913.66

Finding the Fourth Proportional to 10,487.17, 15,721.39 and 3,913.66

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Solution

The fourth proportional to 10,487.17, 15,721.39 and 3,913.66 is: 5,867.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.17 : 15,721.39 = 3,913.66 : x
  2. Step 2: Convert to fraction form
    10,487.17/15,721.39 = 3,913.66/x
  3. Step 3: Cross multiply
    10,487.17x = 15,721.39 × 3,913.66
  4. Step 4: Simplify right side
    10,487.17x = 61,528,175.19
  5. Step 5: Solve for x
    x = 61,528,175.19/10,487.17
  6. Step 6: Final answer
    x = 5,867.00

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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.