Home / 21,324.60-29,439.96-14,787.90

Finding the Fourth Proportional to 21,324.60, 29,439.96 and 14,787.90

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Solution

The fourth proportional to 21,324.60, 29,439.96 and 14,787.90 is: 20,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.60 : 29,439.96 = 14,787.90 : x
  2. Step 2: Convert to fraction form
    21,324.60/29,439.96 = 14,787.90/x
  3. Step 3: Cross multiply
    21,324.60x = 29,439.96 × 14,787.90
  4. Step 4: Simplify right side
    21,324.60x = 435,355,184.48
  5. Step 5: Solve for x
    x = 435,355,184.48/21,324.60
  6. Step 6: Final answer
    x = 20,415.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.