Home / 21,439.12-29,586.12-12,007.66

Finding the Fourth Proportional to 21,439.12, 29,586.12 and 12,007.66

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Solution

The fourth proportional to 21,439.12, 29,586.12 and 12,007.66 is: 16,570.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.12 : 29,586.12 = 12,007.66 : x
  2. Step 2: Convert to fraction form
    21,439.12/29,586.12 = 12,007.66/x
  3. Step 3: Cross multiply
    21,439.12x = 29,586.12 × 12,007.66
  4. Step 4: Simplify right side
    21,439.12x = 355,260,069.68
  5. Step 5: Solve for x
    x = 355,260,069.68/21,439.12
  6. Step 6: Final answer
    x = 16,570.65

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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.