Home / 9,929.14-13,714.18-7,919.53

Finding the Fourth Proportional to 9,929.14, 13,714.18 and 7,919.53

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Solution

The fourth proportional to 9,929.14, 13,714.18 and 7,919.53 is: 10,938.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,929.14 : 13,714.18 = 7,919.53 : x
  2. Step 2: Convert to fraction form
    9,929.14/13,714.18 = 7,919.53/x
  3. Step 3: Cross multiply
    9,929.14x = 13,714.18 × 7,919.53
  4. Step 4: Simplify right side
    9,929.14x = 108,609,805.85
  5. Step 5: Solve for x
    x = 108,609,805.85/9,929.14
  6. Step 6: Final answer
    x = 10,938.49

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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.