Home / 38,445.84-57,687.19-20,915.64

Finding the Fourth Proportional to 38,445.84, 57,687.19 and 20,915.64

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Solution

The fourth proportional to 38,445.84, 57,687.19 and 20,915.64 is: 31,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.84 : 57,687.19 = 20,915.64 : x
  2. Step 2: Convert to fraction form
    38,445.84/57,687.19 = 20,915.64/x
  3. Step 3: Cross multiply
    38,445.84x = 57,687.19 × 20,915.64
  4. Step 4: Simplify right side
    38,445.84x = 1,206,564,446.36
  5. Step 5: Solve for x
    x = 1,206,564,446.36/38,445.84
  6. Step 6: Final answer
    x = 31,383.49

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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.