Home / 21,865.71-32,770.88-13,965.18

Finding the Fourth Proportional to 21,865.71, 32,770.88 and 13,965.18

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Solution

The fourth proportional to 21,865.71, 32,770.88 and 13,965.18 is: 20,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.71 : 32,770.88 = 13,965.18 : x
  2. Step 2: Convert to fraction form
    21,865.71/32,770.88 = 13,965.18/x
  3. Step 3: Cross multiply
    21,865.71x = 32,770.88 × 13,965.18
  4. Step 4: Simplify right side
    21,865.71x = 457,651,168.13
  5. Step 5: Solve for x
    x = 457,651,168.13/21,865.71
  6. Step 6: Final answer
    x = 20,930.08

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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.