Home / 28,560.90-39,414.84-15,985.65

Finding the Fourth Proportional to 28,560.90, 39,414.84 and 15,985.65

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Solution

The fourth proportional to 28,560.90, 39,414.84 and 15,985.65 is: 22,060.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.90 : 39,414.84 = 15,985.65 : x
  2. Step 2: Convert to fraction form
    28,560.90/39,414.84 = 15,985.65/x
  3. Step 3: Cross multiply
    28,560.90x = 39,414.84 × 15,985.65
  4. Step 4: Simplify right side
    28,560.90x = 630,071,837.05
  5. Step 5: Solve for x
    x = 630,071,837.05/28,560.90
  6. Step 6: Final answer
    x = 22,060.64

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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.