Home / 13,686.64-20,523.80-5,787.52

Finding the Fourth Proportional to 13,686.64, 20,523.80 and 5,787.52

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Solution

The fourth proportional to 13,686.64, 20,523.80 and 5,787.52 is: 8,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.64 : 20,523.80 = 5,787.52 : x
  2. Step 2: Convert to fraction form
    13,686.64/20,523.80 = 5,787.52/x
  3. Step 3: Cross multiply
    13,686.64x = 20,523.80 × 5,787.52
  4. Step 4: Simplify right side
    13,686.64x = 118,781,902.98
  5. Step 5: Solve for x
    x = 118,781,902.98/13,686.64
  6. Step 6: Final answer
    x = 8,678.68

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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.