Home / 21,960.36-32,876.28-13,615.20

Finding the Fourth Proportional to 21,960.36, 32,876.28 and 13,615.20

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Solution

The fourth proportional to 21,960.36, 32,876.28 and 13,615.20 is: 20,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.36 : 32,876.28 = 13,615.20 : x
  2. Step 2: Convert to fraction form
    21,960.36/32,876.28 = 13,615.20/x
  3. Step 3: Cross multiply
    21,960.36x = 32,876.28 × 13,615.20
  4. Step 4: Simplify right side
    21,960.36x = 447,617,127.46
  5. Step 5: Solve for x
    x = 447,617,127.46/21,960.36
  6. Step 6: Final answer
    x = 20,382.96

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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.