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Finding the Fourth Proportional to 9,999.92, 15,003.12 and 3,426.16

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Solution

The fourth proportional to 9,999.92, 15,003.12 and 3,426.16 is: 5,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.92 : 15,003.12 = 3,426.16 : x
  2. Step 2: Convert to fraction form
    9,999.92/15,003.12 = 3,426.16/x
  3. Step 3: Cross multiply
    9,999.92x = 15,003.12 × 3,426.16
  4. Step 4: Simplify right side
    9,999.92x = 51,403,127.13
  5. Step 5: Solve for x
    x = 51,403,127.13/9,999.92
  6. Step 6: Final answer
    x = 5,140.35

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1.5x scale

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.