Home / 21,146.76-31,740.84-17,659.08

Finding the Fourth Proportional to 21,146.76, 31,740.84 and 17,659.08

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Solution

The fourth proportional to 21,146.76, 31,740.84 and 17,659.08 is: 26,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.76 : 31,740.84 = 17,659.08 : x
  2. Step 2: Convert to fraction form
    21,146.76/31,740.84 = 17,659.08/x
  3. Step 3: Cross multiply
    21,146.76x = 31,740.84 × 17,659.08
  4. Step 4: Simplify right side
    21,146.76x = 560,514,032.83
  5. Step 5: Solve for x
    x = 560,514,032.83/21,146.76
  6. Step 6: Final answer
    x = 26,505.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.