Home / 18,219.40-25,142.76-10,261.68

Finding the Fourth Proportional to 18,219.40, 25,142.76 and 10,261.68

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Solution

The fourth proportional to 18,219.40, 25,142.76 and 10,261.68 is: 14,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.40 : 25,142.76 = 10,261.68 : x
  2. Step 2: Convert to fraction form
    18,219.40/25,142.76 = 10,261.68/x
  3. Step 3: Cross multiply
    18,219.40x = 25,142.76 × 10,261.68
  4. Step 4: Simplify right side
    18,219.40x = 258,006,957.44
  5. Step 5: Solve for x
    x = 258,006,957.44/18,219.40
  6. Step 6: Final answer
    x = 14,161.11

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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.