Home / 28,402.39-39,197.01-15,655.56

Finding the Fourth Proportional to 28,402.39, 39,197.01 and 15,655.56

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Solution

The fourth proportional to 28,402.39, 39,197.01 and 15,655.56 is: 21,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.39 : 39,197.01 = 15,655.56 : x
  2. Step 2: Convert to fraction form
    28,402.39/39,197.01 = 15,655.56/x
  3. Step 3: Cross multiply
    28,402.39x = 39,197.01 × 15,655.56
  4. Step 4: Simplify right side
    28,402.39x = 613,651,141.88
  5. Step 5: Solve for x
    x = 613,651,141.88/28,402.39
  6. Step 6: Final answer
    x = 21,605.62

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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.