Home / 28,321.60-42,487.50-11,672.36

Finding the Fourth Proportional to 28,321.60, 42,487.50 and 11,672.36

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Solution

The fourth proportional to 28,321.60, 42,487.50 and 11,672.36 is: 17,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.60 : 42,487.50 = 11,672.36 : x
  2. Step 2: Convert to fraction form
    28,321.60/42,487.50 = 11,672.36/x
  3. Step 3: Cross multiply
    28,321.60x = 42,487.50 × 11,672.36
  4. Step 4: Simplify right side
    28,321.60x = 495,929,395.50
  5. Step 5: Solve for x
    x = 495,929,395.50/28,321.60
  6. Step 6: Final answer
    x = 17,510.64

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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.