Home / 10,718.40-16,080-3,792.72

Finding the Fourth Proportional to 10,718.40, 16,080 and 3,792.72

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Solution

The fourth proportional to 10,718.40, 16,080 and 3,792.72 is: 5,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,718.40 : 16,080 = 3,792.72 : x
  2. Step 2: Convert to fraction form
    10,718.40/16,080 = 3,792.72/x
  3. Step 3: Cross multiply
    10,718.40x = 16,080 × 3,792.72
  4. Step 4: Simplify right side
    10,718.40x = 60,986,937.60
  5. Step 5: Solve for x
    x = 60,986,937.60/10,718.40
  6. Step 6: Final answer
    x = 5,689.93

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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.