Home / 9,929.59-13,702.16-5,680.13

Finding the Fourth Proportional to 9,929.59, 13,702.16 and 5,680.13

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Solution

The fourth proportional to 9,929.59, 13,702.16 and 5,680.13 is: 7,838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,929.59 : 13,702.16 = 5,680.13 : x
  2. Step 2: Convert to fraction form
    9,929.59/13,702.16 = 5,680.13/x
  3. Step 3: Cross multiply
    9,929.59x = 13,702.16 × 5,680.13
  4. Step 4: Simplify right side
    9,929.59x = 77,829,995.77
  5. Step 5: Solve for x
    x = 77,829,995.77/9,929.59
  6. Step 6: Final answer
    x = 7,838.19

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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.