Home / 38,641.28-53,320.32-21,646.40

Finding the Fourth Proportional to 38,641.28, 53,320.32 and 21,646.40

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Solution

The fourth proportional to 38,641.28, 53,320.32 and 21,646.40 is: 29,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,641.28 : 53,320.32 = 21,646.40 : x
  2. Step 2: Convert to fraction form
    38,641.28/53,320.32 = 21,646.40/x
  3. Step 3: Cross multiply
    38,641.28x = 53,320.32 × 21,646.40
  4. Step 4: Simplify right side
    38,641.28x = 1,154,192,974.85
  5. Step 5: Solve for x
    x = 1,154,192,974.85/38,641.28
  6. Step 6: Final answer
    x = 29,869.43

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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.