Home / 29,146.20-40,185.90-21,581.88

Finding the Fourth Proportional to 29,146.20, 40,185.90 and 21,581.88

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Solution

The fourth proportional to 29,146.20, 40,185.90 and 21,581.88 is: 29,756.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,146.20 : 40,185.90 = 21,581.88 : x
  2. Step 2: Convert to fraction form
    29,146.20/40,185.90 = 21,581.88/x
  3. Step 3: Cross multiply
    29,146.20x = 40,185.90 × 21,581.88
  4. Step 4: Simplify right side
    29,146.20x = 867,287,271.49
  5. Step 5: Solve for x
    x = 867,287,271.49/29,146.20
  6. Step 6: Final answer
    x = 29,756.44

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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.