Home / 39,318.06-54,260.34-21,412.20

Finding the Fourth Proportional to 39,318.06, 54,260.34 and 21,412.20

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Solution

The fourth proportional to 39,318.06, 54,260.34 and 21,412.20 is: 29,549.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,318.06 : 54,260.34 = 21,412.20 : x
  2. Step 2: Convert to fraction form
    39,318.06/54,260.34 = 21,412.20/x
  3. Step 3: Cross multiply
    39,318.06x = 54,260.34 × 21,412.20
  4. Step 4: Simplify right side
    39,318.06x = 1,161,833,252.15
  5. Step 5: Solve for x
    x = 1,161,833,252.15/39,318.06
  6. Step 6: Final answer
    x = 29,549.61

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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.