Home / 28,407.19-39,199.27-15,658.15

Finding the Fourth Proportional to 28,407.19, 39,199.27 and 15,658.15

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Solution

The fourth proportional to 28,407.19, 39,199.27 and 15,658.15 is: 21,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.19 : 39,199.27 = 15,658.15 : x
  2. Step 2: Convert to fraction form
    28,407.19/39,199.27 = 15,658.15/x
  3. Step 3: Cross multiply
    28,407.19x = 39,199.27 × 15,658.15
  4. Step 4: Simplify right side
    28,407.19x = 613,788,049.55
  5. Step 5: Solve for x
    x = 613,788,049.55/28,407.19
  6. Step 6: Final answer
    x = 21,606.79

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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.