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Finding the Fourth Proportional to 15,423.66, 23,130.70 and 5,561.66

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Solution

The fourth proportional to 15,423.66, 23,130.70 and 5,561.66 is: 8,340.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.66 : 23,130.70 = 5,561.66 : x
  2. Step 2: Convert to fraction form
    15,423.66/23,130.70 = 5,561.66/x
  3. Step 3: Cross multiply
    15,423.66x = 23,130.70 × 5,561.66
  4. Step 4: Simplify right side
    15,423.66x = 128,645,088.96
  5. Step 5: Solve for x
    x = 128,645,088.96/15,423.66
  6. Step 6: Final answer
    x = 8,340.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.