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Finding the Fourth Proportional to 15,557.61, 23,343.92 and 7,655.84

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Solution

The fourth proportional to 15,557.61, 23,343.92 and 7,655.84 is: 11,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.61 : 23,343.92 = 7,655.84 : x
  2. Step 2: Convert to fraction form
    15,557.61/23,343.92 = 7,655.84/x
  3. Step 3: Cross multiply
    15,557.61x = 23,343.92 × 7,655.84
  4. Step 4: Simplify right side
    15,557.61x = 178,717,316.49
  5. Step 5: Solve for x
    x = 178,717,316.49/15,557.61
  6. Step 6: Final answer
    x = 11,487.45

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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.