Home / 22,140.60-30,491.82-21,656.76

Finding the Fourth Proportional to 22,140.60, 30,491.82 and 21,656.76

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Solution

The fourth proportional to 22,140.60, 30,491.82 and 21,656.76 is: 29,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140.60 : 30,491.82 = 21,656.76 : x
  2. Step 2: Convert to fraction form
    22,140.60/30,491.82 = 21,656.76/x
  3. Step 3: Cross multiply
    22,140.60x = 30,491.82 × 21,656.76
  4. Step 4: Simplify right side
    22,140.60x = 660,354,027.70
  5. Step 5: Solve for x
    x = 660,354,027.70/22,140.60
  6. Step 6: Final answer
    x = 29,825.48

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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.