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Finding the Fourth Proportional to 15,390, 23,088.24 and 6,156

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Solution

The fourth proportional to 15,390, 23,088.24 and 6,156 is: 9,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390 : 23,088.24 = 6,156 : x
  2. Step 2: Convert to fraction form
    15,390/23,088.24 = 6,156/x
  3. Step 3: Cross multiply
    15,390x = 23,088.24 × 6,156
  4. Step 4: Simplify right side
    15,390x = 142,131,205.44
  5. Step 5: Solve for x
    x = 142,131,205.44/15,390
  6. Step 6: Final answer
    x = 9,235.30

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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.