Home / 18,910.40-28,507.20-17,641.76

Finding the Fourth Proportional to 18,910.40, 28,507.20 and 17,641.76

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Solution

The fourth proportional to 18,910.40, 28,507.20 and 17,641.76 is: 26,594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.40 : 28,507.20 = 17,641.76 : x
  2. Step 2: Convert to fraction form
    18,910.40/28,507.20 = 17,641.76/x
  3. Step 3: Cross multiply
    18,910.40x = 28,507.20 × 17,641.76
  4. Step 4: Simplify right side
    18,910.40x = 502,917,180.67
  5. Step 5: Solve for x
    x = 502,917,180.67/18,910.40
  6. Step 6: Final answer
    x = 26,594.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.