Home / 18,864.64-26,026.12-11,691.28

Finding the Fourth Proportional to 18,864.64, 26,026.12 and 11,691.28

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Solution

The fourth proportional to 18,864.64, 26,026.12 and 11,691.28 is: 16,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.64 : 26,026.12 = 11,691.28 : x
  2. Step 2: Convert to fraction form
    18,864.64/26,026.12 = 11,691.28/x
  3. Step 3: Cross multiply
    18,864.64x = 26,026.12 × 11,691.28
  4. Step 4: Simplify right side
    18,864.64x = 304,278,656.23
  5. Step 5: Solve for x
    x = 304,278,656.23/18,864.64
  6. Step 6: Final answer
    x = 16,129.58

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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.