Home / 12,444.12-18,667.86-4,121.40

Finding the Fourth Proportional to 12,444.12, 18,667.86 and 4,121.40

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Solution

The fourth proportional to 12,444.12, 18,667.86 and 4,121.40 is: 6,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.12 : 18,667.86 = 4,121.40 : x
  2. Step 2: Convert to fraction form
    12,444.12/18,667.86 = 4,121.40/x
  3. Step 3: Cross multiply
    12,444.12x = 18,667.86 × 4,121.40
  4. Step 4: Simplify right side
    12,444.12x = 76,937,718.20
  5. Step 5: Solve for x
    x = 76,937,718.20/12,444.12
  6. Step 6: Final answer
    x = 6,182.66

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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.