Home / 39,659.13-54,730.23-21,753.81

Finding the Fourth Proportional to 39,659.13, 54,730.23 and 21,753.81

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Solution

The fourth proportional to 39,659.13, 54,730.23 and 21,753.81 is: 30,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.13 : 54,730.23 = 21,753.81 : x
  2. Step 2: Convert to fraction form
    39,659.13/54,730.23 = 21,753.81/x
  3. Step 3: Cross multiply
    39,659.13x = 54,730.23 × 21,753.81
  4. Step 4: Simplify right side
    39,659.13x = 1,190,591,024.68
  5. Step 5: Solve for x
    x = 1,190,591,024.68/39,659.13
  6. Step 6: Final answer
    x = 30,020.60

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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.