Home / 38,516.76-53,153.14-21,749.72

Finding the Fourth Proportional to 38,516.76, 53,153.14 and 21,749.72

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Solution

The fourth proportional to 38,516.76, 53,153.14 and 21,749.72 is: 30,014.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,516.76 : 53,153.14 = 21,749.72 : x
  2. Step 2: Convert to fraction form
    38,516.76/53,153.14 = 21,749.72/x
  3. Step 3: Cross multiply
    38,516.76x = 53,153.14 × 21,749.72
  4. Step 4: Simplify right side
    38,516.76x = 1,156,065,912.12
  5. Step 5: Solve for x
    x = 1,156,065,912.12/38,516.76
  6. Step 6: Final answer
    x = 30,014.62

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Similar ratio
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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.