Home / 28,677.91-39,576.02-15,932.25

Finding the Fourth Proportional to 28,677.91, 39,576.02 and 15,932.25

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Solution

The fourth proportional to 28,677.91, 39,576.02 and 15,932.25 is: 21,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.91 : 39,576.02 = 15,932.25 : x
  2. Step 2: Convert to fraction form
    28,677.91/39,576.02 = 15,932.25/x
  3. Step 3: Cross multiply
    28,677.91x = 39,576.02 × 15,932.25
  4. Step 4: Simplify right side
    28,677.91x = 630,535,044.65
  5. Step 5: Solve for x
    x = 630,535,044.65/28,677.91
  6. Step 6: Final answer
    x = 21,986.79

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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.