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Finding the Fourth Proportional to 10,567.90, 15,852.38 and 8,715.60

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Solution

The fourth proportional to 10,567.90, 15,852.38 and 8,715.60 is: 13,073.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,567.90 : 15,852.38 = 8,715.60 : x
  2. Step 2: Convert to fraction form
    10,567.90/15,852.38 = 8,715.60/x
  3. Step 3: Cross multiply
    10,567.90x = 15,852.38 × 8,715.60
  4. Step 4: Simplify right side
    10,567.90x = 138,162,959.55
  5. Step 5: Solve for x
    x = 138,162,959.55/10,567.90
  6. Step 6: Final answer
    x = 13,073.83

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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.