Home / 21,661.19-32,417.85-18,155.15

Finding the Fourth Proportional to 21,661.19, 32,417.85 and 18,155.15

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Solution

The fourth proportional to 21,661.19, 32,417.85 and 18,155.15 is: 27,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.19 : 32,417.85 = 18,155.15 : x
  2. Step 2: Convert to fraction form
    21,661.19/32,417.85 = 18,155.15/x
  3. Step 3: Cross multiply
    21,661.19x = 32,417.85 × 18,155.15
  4. Step 4: Simplify right side
    21,661.19x = 588,550,974.82
  5. Step 5: Solve for x
    x = 588,550,974.82/21,661.19
  6. Step 6: Final answer
    x = 27,170.77

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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.