Home / 19,865.12-29,787.60-7,384.64

Finding the Fourth Proportional to 19,865.12, 29,787.60 and 7,384.64

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Solution

The fourth proportional to 19,865.12, 29,787.60 and 7,384.64 is: 11,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.12 : 29,787.60 = 7,384.64 : x
  2. Step 2: Convert to fraction form
    19,865.12/29,787.60 = 7,384.64/x
  3. Step 3: Cross multiply
    19,865.12x = 29,787.60 × 7,384.64
  4. Step 4: Simplify right side
    19,865.12x = 219,970,702.46
  5. Step 5: Solve for x
    x = 219,970,702.46/19,865.12
  6. Step 6: Final answer
    x = 11,073.21

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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.