Home / 38,039.79-57,084.17-20,521.71

Finding the Fourth Proportional to 38,039.79, 57,084.17 and 20,521.71

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Solution

The fourth proportional to 38,039.79, 57,084.17 and 20,521.71 is: 30,795.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,039.79 : 57,084.17 = 20,521.71 : x
  2. Step 2: Convert to fraction form
    38,039.79/57,084.17 = 20,521.71/x
  3. Step 3: Cross multiply
    38,039.79x = 57,084.17 × 20,521.71
  4. Step 4: Simplify right side
    38,039.79x = 1,171,464,679.72
  5. Step 5: Solve for x
    x = 1,171,464,679.72/38,039.79
  6. Step 6: Final answer
    x = 30,795.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.