Home / 12,144.32-18,125.80-11,849.12

Finding the Fourth Proportional to 12,144.32, 18,125.80 and 11,849.12

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Solution

The fourth proportional to 12,144.32, 18,125.80 and 11,849.12 is: 17,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.32 : 18,125.80 = 11,849.12 : x
  2. Step 2: Convert to fraction form
    12,144.32/18,125.80 = 11,849.12/x
  3. Step 3: Cross multiply
    12,144.32x = 18,125.80 × 11,849.12
  4. Step 4: Simplify right side
    12,144.32x = 214,774,779.30
  5. Step 5: Solve for x
    x = 214,774,779.30/12,144.32
  6. Step 6: Final answer
    x = 17,685.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.