Home / 20,060.40-30,155.40-14,257.20

Finding the Fourth Proportional to 20,060.40, 30,155.40 and 14,257.20

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Solution

The fourth proportional to 20,060.40, 30,155.40 and 14,257.20 is: 21,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,060.40 : 30,155.40 = 14,257.20 : x
  2. Step 2: Convert to fraction form
    20,060.40/30,155.40 = 14,257.20/x
  3. Step 3: Cross multiply
    20,060.40x = 30,155.40 × 14,257.20
  4. Step 4: Simplify right side
    20,060.40x = 429,931,568.88
  5. Step 5: Solve for x
    x = 429,931,568.88/20,060.40
  6. Step 6: Final answer
    x = 21,431.85

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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.