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Finding the Fourth Proportional to 11,393.43, 15,721.05 and 7,610.53

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Solution

The fourth proportional to 11,393.43, 15,721.05 and 7,610.53 is: 10,501.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.43 : 15,721.05 = 7,610.53 : x
  2. Step 2: Convert to fraction form
    11,393.43/15,721.05 = 7,610.53/x
  3. Step 3: Cross multiply
    11,393.43x = 15,721.05 × 7,610.53
  4. Step 4: Simplify right side
    11,393.43x = 119,645,406.00
  5. Step 5: Solve for x
    x = 119,645,406.00/11,393.43
  6. Step 6: Final answer
    x = 10,501.26

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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.