Home / 28,217.60-42,344.40-13,443.20

Finding the Fourth Proportional to 28,217.60, 42,344.40 and 13,443.20

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Solution

The fourth proportional to 28,217.60, 42,344.40 and 13,443.20 is: 20,173.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.60 : 42,344.40 = 13,443.20 : x
  2. Step 2: Convert to fraction form
    28,217.60/42,344.40 = 13,443.20/x
  3. Step 3: Cross multiply
    28,217.60x = 42,344.40 × 13,443.20
  4. Step 4: Simplify right side
    28,217.60x = 569,244,238.08
  5. Step 5: Solve for x
    x = 569,244,238.08/28,217.60
  6. Step 6: Final answer
    x = 20,173.38

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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.