Home / 21,407.20-32,110.80-9,706.78

Finding the Fourth Proportional to 21,407.20, 32,110.80 and 9,706.78

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Solution

The fourth proportional to 21,407.20, 32,110.80 and 9,706.78 is: 14,560.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.20 : 32,110.80 = 9,706.78 : x
  2. Step 2: Convert to fraction form
    21,407.20/32,110.80 = 9,706.78/x
  3. Step 3: Cross multiply
    21,407.20x = 32,110.80 × 9,706.78
  4. Step 4: Simplify right side
    21,407.20x = 311,692,471.22
  5. Step 5: Solve for x
    x = 311,692,471.22/21,407.20
  6. Step 6: Final answer
    x = 14,560.17

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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.