Home / 39,655.92-54,724.17-21,505.65

Finding the Fourth Proportional to 39,655.92, 54,724.17 and 21,505.65

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Solution

The fourth proportional to 39,655.92, 54,724.17 and 21,505.65 is: 29,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,655.92 : 54,724.17 = 21,505.65 : x
  2. Step 2: Convert to fraction form
    39,655.92/54,724.17 = 21,505.65/x
  3. Step 3: Cross multiply
    39,655.92x = 54,724.17 × 21,505.65
  4. Step 4: Simplify right side
    39,655.92x = 1,176,878,846.56
  5. Step 5: Solve for x
    x = 1,176,878,846.56/39,655.92
  6. Step 6: Final answer
    x = 29,677.25

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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.