Home / 18,219.80-25,143.46-10,261.28

Finding the Fourth Proportional to 18,219.80, 25,143.46 and 10,261.28

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Solution

The fourth proportional to 18,219.80, 25,143.46 and 10,261.28 is: 14,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.80 : 25,143.46 = 10,261.28 : x
  2. Step 2: Convert to fraction form
    18,219.80/25,143.46 = 10,261.28/x
  3. Step 3: Cross multiply
    18,219.80x = 25,143.46 × 10,261.28
  4. Step 4: Simplify right side
    18,219.80x = 258,003,931.86
  5. Step 5: Solve for x
    x = 258,003,931.86/18,219.80
  6. Step 6: Final answer
    x = 14,160.64

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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.