Home / 28,790.32-39,731.16-16,215.52

Finding the Fourth Proportional to 28,790.32, 39,731.16 and 16,215.52

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Solution

The fourth proportional to 28,790.32, 39,731.16 and 16,215.52 is: 22,377.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790.32 : 39,731.16 = 16,215.52 : x
  2. Step 2: Convert to fraction form
    28,790.32/39,731.16 = 16,215.52/x
  3. Step 3: Cross multiply
    28,790.32x = 39,731.16 × 16,215.52
  4. Step 4: Simplify right side
    28,790.32x = 644,261,419.60
  5. Step 5: Solve for x
    x = 644,261,419.60/28,790.32
  6. Step 6: Final answer
    x = 22,377.71

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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.