Home / 15,615.11-23,385.14-8,931.36

Finding the Fourth Proportional to 15,615.11, 23,385.14 and 8,931.36

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Solution

The fourth proportional to 15,615.11, 23,385.14 and 8,931.36 is: 13,375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.11 : 23,385.14 = 8,931.36 : x
  2. Step 2: Convert to fraction form
    15,615.11/23,385.14 = 8,931.36/x
  3. Step 3: Cross multiply
    15,615.11x = 23,385.14 × 8,931.36
  4. Step 4: Simplify right side
    15,615.11x = 208,860,964.74
  5. Step 5: Solve for x
    x = 208,860,964.74/15,615.11
  6. Step 6: Final answer
    x = 13,375.57

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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.