Home / 15,714.03-21,685.38-8,543.91

Finding the Fourth Proportional to 15,714.03, 21,685.38 and 8,543.91

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Solution

The fourth proportional to 15,714.03, 21,685.38 and 8,543.91 is: 11,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.03 : 21,685.38 = 8,543.91 : x
  2. Step 2: Convert to fraction form
    15,714.03/21,685.38 = 8,543.91/x
  3. Step 3: Cross multiply
    15,714.03x = 21,685.38 × 8,543.91
  4. Step 4: Simplify right side
    15,714.03x = 185,277,935.04
  5. Step 5: Solve for x
    x = 185,277,935.04/15,714.03
  6. Step 6: Final answer
    x = 11,790.61

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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.