Home / 12,961.65-19,440.18-4,641.74

Finding the Fourth Proportional to 12,961.65, 19,440.18 and 4,641.74

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Solution

The fourth proportional to 12,961.65, 19,440.18 and 4,641.74 is: 6,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.65 : 19,440.18 = 4,641.74 : x
  2. Step 2: Convert to fraction form
    12,961.65/19,440.18 = 4,641.74/x
  3. Step 3: Cross multiply
    12,961.65x = 19,440.18 × 4,641.74
  4. Step 4: Simplify right side
    12,961.65x = 90,236,163.91
  5. Step 5: Solve for x
    x = 90,236,163.91/12,961.65
  6. Step 6: Final answer
    x = 6,961.78

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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.