Home / 28,778.31-39,711.38-16,030.22

Finding the Fourth Proportional to 28,778.31, 39,711.38 and 16,030.22

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Solution

The fourth proportional to 28,778.31, 39,711.38 and 16,030.22 is: 22,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.31 : 39,711.38 = 16,030.22 : x
  2. Step 2: Convert to fraction form
    28,778.31/39,711.38 = 16,030.22/x
  3. Step 3: Cross multiply
    28,778.31x = 39,711.38 × 16,030.22
  4. Step 4: Simplify right side
    28,778.31x = 636,581,879.20
  5. Step 5: Solve for x
    x = 636,581,879.20/28,778.31
  6. Step 6: Final answer
    x = 22,120.20

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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.