Home / 28,286.87-39,031.54-16,347.90

Finding the Fourth Proportional to 28,286.87, 39,031.54 and 16,347.90

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Solution

The fourth proportional to 28,286.87, 39,031.54 and 16,347.90 is: 22,557.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.87 : 39,031.54 = 16,347.90 : x
  2. Step 2: Convert to fraction form
    28,286.87/39,031.54 = 16,347.90/x
  3. Step 3: Cross multiply
    28,286.87x = 39,031.54 × 16,347.90
  4. Step 4: Simplify right side
    28,286.87x = 638,083,712.77
  5. Step 5: Solve for x
    x = 638,083,712.77/28,286.87
  6. Step 6: Final answer
    x = 22,557.59

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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.