Home / 21,382.90-29,508.08-12,433.62

Finding the Fourth Proportional to 21,382.90, 29,508.08 and 12,433.62

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Solution

The fourth proportional to 21,382.90, 29,508.08 and 12,433.62 is: 17,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.90 : 29,508.08 = 12,433.62 : x
  2. Step 2: Convert to fraction form
    21,382.90/29,508.08 = 12,433.62/x
  3. Step 3: Cross multiply
    21,382.90x = 29,508.08 × 12,433.62
  4. Step 4: Simplify right side
    21,382.90x = 366,892,253.65
  5. Step 5: Solve for x
    x = 366,892,253.65/21,382.90
  6. Step 6: Final answer
    x = 17,158.21

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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.