Home / 39,657.20-54,728.47-21,752.96

Finding the Fourth Proportional to 39,657.20, 54,728.47 and 21,752.96

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Solution

The fourth proportional to 39,657.20, 54,728.47 and 21,752.96 is: 30,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.20 : 54,728.47 = 21,752.96 : x
  2. Step 2: Convert to fraction form
    39,657.20/54,728.47 = 21,752.96/x
  3. Step 3: Cross multiply
    39,657.20x = 54,728.47 × 21,752.96
  4. Step 4: Simplify right side
    39,657.20x = 1,190,506,382.78
  5. Step 5: Solve for x
    x = 1,190,506,382.78/39,657.20
  6. Step 6: Final answer
    x = 30,019.93

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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.