Home / 21,998.76-30,358.34-12,567.28

Finding the Fourth Proportional to 21,998.76, 30,358.34 and 12,567.28

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Solution

The fourth proportional to 21,998.76, 30,358.34 and 12,567.28 is: 17,342.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.76 : 30,358.34 = 12,567.28 : x
  2. Step 2: Convert to fraction form
    21,998.76/30,358.34 = 12,567.28/x
  3. Step 3: Cross multiply
    21,998.76x = 30,358.34 × 12,567.28
  4. Step 4: Simplify right side
    21,998.76x = 381,521,759.12
  5. Step 5: Solve for x
    x = 381,521,759.12/21,998.76
  6. Step 6: Final answer
    x = 17,342.88

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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.