Home / 39,678.02-54,755.76-21,773.17

Finding the Fourth Proportional to 39,678.02, 54,755.76 and 21,773.17

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Solution

The fourth proportional to 39,678.02, 54,755.76 and 21,773.17 is: 30,047.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.02 : 54,755.76 = 21,773.17 : x
  2. Step 2: Convert to fraction form
    39,678.02/54,755.76 = 21,773.17/x
  3. Step 3: Cross multiply
    39,678.02x = 54,755.76 × 21,773.17
  4. Step 4: Simplify right side
    39,678.02x = 1,192,206,470.96
  5. Step 5: Solve for x
    x = 1,192,206,470.96/39,678.02
  6. Step 6: Final answer
    x = 30,047.03

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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.