Home / 21,996.13-30,357.11-12,564.70

Finding the Fourth Proportional to 21,996.13, 30,357.11 and 12,564.70

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Solution

The fourth proportional to 21,996.13, 30,357.11 and 12,564.70 is: 17,340.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.13 : 30,357.11 = 12,564.70 : x
  2. Step 2: Convert to fraction form
    21,996.13/30,357.11 = 12,564.70/x
  3. Step 3: Cross multiply
    21,996.13x = 30,357.11 × 12,564.70
  4. Step 4: Simplify right side
    21,996.13x = 381,427,980.02
  5. Step 5: Solve for x
    x = 381,427,980.02/21,996.13
  6. Step 6: Final answer
    x = 17,340.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.