Home / 15,714.31-21,686.18-8,544.71

Finding the Fourth Proportional to 15,714.31, 21,686.18 and 8,544.71

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Solution

The fourth proportional to 15,714.31, 21,686.18 and 8,544.71 is: 11,791.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.31 : 21,686.18 = 8,544.71 : x
  2. Step 2: Convert to fraction form
    15,714.31/21,686.18 = 8,544.71/x
  3. Step 3: Cross multiply
    15,714.31x = 21,686.18 × 8,544.71
  4. Step 4: Simplify right side
    15,714.31x = 185,302,119.11
  5. Step 5: Solve for x
    x = 185,302,119.11/15,714.31
  6. Step 6: Final answer
    x = 11,791.93

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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.