Home / 28,402.55-39,195.79-15,656.22

Finding the Fourth Proportional to 28,402.55, 39,195.79 and 15,656.22

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Solution

The fourth proportional to 28,402.55, 39,195.79 and 15,656.22 is: 21,605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.55 : 39,195.79 = 15,656.22 : x
  2. Step 2: Convert to fraction form
    28,402.55/39,195.79 = 15,656.22/x
  3. Step 3: Cross multiply
    28,402.55x = 39,195.79 × 15,656.22
  4. Step 4: Simplify right side
    28,402.55x = 613,657,872.17
  5. Step 5: Solve for x
    x = 613,657,872.17/28,402.55
  6. Step 6: Final answer
    x = 21,605.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.