Home / 28,417.52-39,218.42-15,671.87

Finding the Fourth Proportional to 28,417.52, 39,218.42 and 15,671.87

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Solution

The fourth proportional to 28,417.52, 39,218.42 and 15,671.87 is: 21,628.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.52 : 39,218.42 = 15,671.87 : x
  2. Step 2: Convert to fraction form
    28,417.52/39,218.42 = 15,671.87/x
  3. Step 3: Cross multiply
    28,417.52x = 39,218.42 × 15,671.87
  4. Step 4: Simplify right side
    28,417.52x = 614,625,778.93
  5. Step 5: Solve for x
    x = 614,625,778.93/28,417.52
  6. Step 6: Final answer
    x = 21,628.41

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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.