Home / 25,877.60-38,816.40-19,715.12

Finding the Fourth Proportional to 25,877.60, 38,816.40 and 19,715.12

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Solution

The fourth proportional to 25,877.60, 38,816.40 and 19,715.12 is: 29,572.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,877.60 : 38,816.40 = 19,715.12 : x
  2. Step 2: Convert to fraction form
    25,877.60/38,816.40 = 19,715.12/x
  3. Step 3: Cross multiply
    25,877.60x = 38,816.40 × 19,715.12
  4. Step 4: Simplify right side
    25,877.60x = 765,269,983.97
  5. Step 5: Solve for x
    x = 765,269,983.97/25,877.60
  6. Step 6: Final answer
    x = 29,572.68

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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.