Home / 28,562.68-39,416.49-15,987.43

Finding the Fourth Proportional to 28,562.68, 39,416.49 and 15,987.43

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Solution

The fourth proportional to 28,562.68, 39,416.49 and 15,987.43 is: 22,062.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.68 : 39,416.49 = 15,987.43 : x
  2. Step 2: Convert to fraction form
    28,562.68/39,416.49 = 15,987.43/x
  3. Step 3: Cross multiply
    28,562.68x = 39,416.49 × 15,987.43
  4. Step 4: Simplify right side
    28,562.68x = 630,168,374.72
  5. Step 5: Solve for x
    x = 630,168,374.72/28,562.68
  6. Step 6: Final answer
    x = 22,062.65

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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.