Home / 15,449.04-21,319.56-8,375.40

Finding the Fourth Proportional to 15,449.04, 21,319.56 and 8,375.40

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Solution

The fourth proportional to 15,449.04, 21,319.56 and 8,375.40 is: 11,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.04 : 21,319.56 = 8,375.40 : x
  2. Step 2: Convert to fraction form
    15,449.04/21,319.56 = 8,375.40/x
  3. Step 3: Cross multiply
    15,449.04x = 21,319.56 × 8,375.40
  4. Step 4: Simplify right side
    15,449.04x = 178,559,842.82
  5. Step 5: Solve for x
    x = 178,559,842.82/15,449.04
  6. Step 6: Final answer
    x = 11,557.99

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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.