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Finding the Fourth Proportional to 10,963.80, 15,130.08 and 6,248.16

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Solution

The fourth proportional to 10,963.80, 15,130.08 and 6,248.16 is: 8,622.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,963.80 : 15,130.08 = 6,248.16 : x
  2. Step 2: Convert to fraction form
    10,963.80/15,130.08 = 6,248.16/x
  3. Step 3: Cross multiply
    10,963.80x = 15,130.08 × 6,248.16
  4. Step 4: Simplify right side
    10,963.80x = 94,535,160.65
  5. Step 5: Solve for x
    x = 94,535,160.65/10,963.80
  6. Step 6: Final answer
    x = 8,622.48

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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.