Home / 19,669.20-29,471.40-9,787.20

Finding the Fourth Proportional to 19,669.20, 29,471.40 and 9,787.20

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Solution

The fourth proportional to 19,669.20, 29,471.40 and 9,787.20 is: 14,664.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,669.20 : 29,471.40 = 9,787.20 : x
  2. Step 2: Convert to fraction form
    19,669.20/29,471.40 = 9,787.20/x
  3. Step 3: Cross multiply
    19,669.20x = 29,471.40 × 9,787.20
  4. Step 4: Simplify right side
    19,669.20x = 288,442,486.08
  5. Step 5: Solve for x
    x = 288,442,486.08/19,669.20
  6. Step 6: Final answer
    x = 14,664.68

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1.5x scale

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.