Home / 28,678.85-39,575.46-15,932.85

Finding the Fourth Proportional to 28,678.85, 39,575.46 and 15,932.85

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Solution

The fourth proportional to 28,678.85, 39,575.46 and 15,932.85 is: 21,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.85 : 39,575.46 = 15,932.85 : x
  2. Step 2: Convert to fraction form
    28,678.85/39,575.46 = 15,932.85/x
  3. Step 3: Cross multiply
    28,678.85x = 39,575.46 × 15,932.85
  4. Step 4: Simplify right side
    28,678.85x = 630,549,867.86
  5. Step 5: Solve for x
    x = 630,549,867.86/28,678.85
  6. Step 6: Final answer
    x = 21,986.59

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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.