Home / 15,335.04-21,175.68-9,679.92

Finding the Fourth Proportional to 15,335.04, 21,175.68 and 9,679.92

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Solution

The fourth proportional to 15,335.04, 21,175.68 and 9,679.92 is: 13,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.04 : 21,175.68 = 9,679.92 : x
  2. Step 2: Convert to fraction form
    15,335.04/21,175.68 = 9,679.92/x
  3. Step 3: Cross multiply
    15,335.04x = 21,175.68 × 9,679.92
  4. Step 4: Simplify right side
    15,335.04x = 204,978,888.35
  5. Step 5: Solve for x
    x = 204,978,888.35/15,335.04
  6. Step 6: Final answer
    x = 13,366.70

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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.