Home / 28,560.29-42,865.05-13,781.64

Finding the Fourth Proportional to 28,560.29, 42,865.05 and 13,781.64

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Solution

The fourth proportional to 28,560.29, 42,865.05 and 13,781.64 is: 20,684.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.29 : 42,865.05 = 13,781.64 : x
  2. Step 2: Convert to fraction form
    28,560.29/42,865.05 = 13,781.64/x
  3. Step 3: Cross multiply
    28,560.29x = 42,865.05 × 13,781.64
  4. Step 4: Simplify right side
    28,560.29x = 590,750,636.00
  5. Step 5: Solve for x
    x = 590,750,636.00/28,560.29
  6. Step 6: Final answer
    x = 20,684.33

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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.