Home / 39,724.17-54,818.58-21,818.76

Finding the Fourth Proportional to 39,724.17, 54,818.58 and 21,818.76

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Solution

The fourth proportional to 39,724.17, 54,818.58 and 21,818.76 is: 30,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.17 : 54,818.58 = 21,818.76 : x
  2. Step 2: Convert to fraction form
    39,724.17/54,818.58 = 21,818.76/x
  3. Step 3: Cross multiply
    39,724.17x = 54,818.58 × 21,818.76
  4. Step 4: Simplify right side
    39,724.17x = 1,196,073,440.56
  5. Step 5: Solve for x
    x = 1,196,073,440.56/39,724.17
  6. Step 6: Final answer
    x = 30,109.46

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Double scale
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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.