Home / 18,261.42-27,381.65-7,155.10

Finding the Fourth Proportional to 18,261.42, 27,381.65 and 7,155.10

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Solution

The fourth proportional to 18,261.42, 27,381.65 and 7,155.10 is: 10,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.42 : 27,381.65 = 7,155.10 : x
  2. Step 2: Convert to fraction form
    18,261.42/27,381.65 = 7,155.10/x
  3. Step 3: Cross multiply
    18,261.42x = 27,381.65 × 7,155.10
  4. Step 4: Simplify right side
    18,261.42x = 195,918,442.37
  5. Step 5: Solve for x
    x = 195,918,442.37/18,261.42
  6. Step 6: Final answer
    x = 10,728.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.