Home / 28,417.14-39,216.15-15,671.79

Finding the Fourth Proportional to 28,417.14, 39,216.15 and 15,671.79

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Solution

The fourth proportional to 28,417.14, 39,216.15 and 15,671.79 is: 21,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.14 : 39,216.15 = 15,671.79 : x
  2. Step 2: Convert to fraction form
    28,417.14/39,216.15 = 15,671.79/x
  3. Step 3: Cross multiply
    28,417.14x = 39,216.15 × 15,671.79
  4. Step 4: Simplify right side
    28,417.14x = 614,587,267.41
  5. Step 5: Solve for x
    x = 614,587,267.41/28,417.14
  6. Step 6: Final answer
    x = 21,627.34

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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.