Home / 20,008.91-30,016.81-8,915.35

Finding the Fourth Proportional to 20,008.91, 30,016.81 and 8,915.35

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Solution

The fourth proportional to 20,008.91, 30,016.81 and 8,915.35 is: 13,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.91 : 30,016.81 = 8,915.35 : x
  2. Step 2: Convert to fraction form
    20,008.91/30,016.81 = 8,915.35/x
  3. Step 3: Cross multiply
    20,008.91x = 30,016.81 × 8,915.35
  4. Step 4: Simplify right side
    20,008.91x = 267,610,367.03
  5. Step 5: Solve for x
    x = 267,610,367.03/20,008.91
  6. Step 6: Final answer
    x = 13,374.56

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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.