Home / 15,714.39-21,686.23-8,544.72

Finding the Fourth Proportional to 15,714.39, 21,686.23 and 8,544.72

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Solution

The fourth proportional to 15,714.39, 21,686.23 and 8,544.72 is: 11,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.39 : 21,686.23 = 8,544.72 : x
  2. Step 2: Convert to fraction form
    15,714.39/21,686.23 = 8,544.72/x
  3. Step 3: Cross multiply
    15,714.39x = 21,686.23 × 8,544.72
  4. Step 4: Simplify right side
    15,714.39x = 185,302,763.21
  5. Step 5: Solve for x
    x = 185,302,763.21/15,714.39
  6. Step 6: Final answer
    x = 11,791.92

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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.