Home / 21,417.12-32,144.88-17,928.96

Finding the Fourth Proportional to 21,417.12, 32,144.88 and 17,928.96

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Solution

The fourth proportional to 21,417.12, 32,144.88 and 17,928.96 is: 26,909.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.12 : 32,144.88 = 17,928.96 : x
  2. Step 2: Convert to fraction form
    21,417.12/32,144.88 = 17,928.96/x
  3. Step 3: Cross multiply
    21,417.12x = 32,144.88 × 17,928.96
  4. Step 4: Simplify right side
    21,417.12x = 576,324,267.72
  5. Step 5: Solve for x
    x = 576,324,267.72/21,417.12
  6. Step 6: Final answer
    x = 26,909.51

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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.