Home / 15,522.86-21,421.55-8,449.26

Finding the Fourth Proportional to 15,522.86, 21,421.55 and 8,449.26

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Solution

The fourth proportional to 15,522.86, 21,421.55 and 8,449.26 is: 11,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.86 : 21,421.55 = 8,449.26 : x
  2. Step 2: Convert to fraction form
    15,522.86/21,421.55 = 8,449.26/x
  3. Step 3: Cross multiply
    15,522.86x = 21,421.55 × 8,449.26
  4. Step 4: Simplify right side
    15,522.86x = 180,996,245.55
  5. Step 5: Solve for x
    x = 180,996,245.55/15,522.86
  6. Step 6: Final answer
    x = 11,659.98

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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.