Home / 38,915.17-58,390.04-18,915.73

Finding the Fourth Proportional to 38,915.17, 58,390.04 and 18,915.73

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Solution

The fourth proportional to 38,915.17, 58,390.04 and 18,915.73 is: 28,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,915.17 : 58,390.04 = 18,915.73 : x
  2. Step 2: Convert to fraction form
    38,915.17/58,390.04 = 18,915.73/x
  3. Step 3: Cross multiply
    38,915.17x = 58,390.04 × 18,915.73
  4. Step 4: Simplify right side
    38,915.17x = 1,104,490,231.33
  5. Step 5: Solve for x
    x = 1,104,490,231.33/38,915.17
  6. Step 6: Final answer
    x = 28,382.00

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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.