Home / 21,589.55-32,342.78-13,245.20

Finding the Fourth Proportional to 21,589.55, 32,342.78 and 13,245.20

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Solution

The fourth proportional to 21,589.55, 32,342.78 and 13,245.20 is: 19,842.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.55 : 32,342.78 = 13,245.20 : x
  2. Step 2: Convert to fraction form
    21,589.55/32,342.78 = 13,245.20/x
  3. Step 3: Cross multiply
    21,589.55x = 32,342.78 × 13,245.20
  4. Step 4: Simplify right side
    21,589.55x = 428,386,703.63
  5. Step 5: Solve for x
    x = 428,386,703.63/21,589.55
  6. Step 6: Final answer
    x = 19,842.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.