Home / 21,370.55-29,491.16-12,423.29

Finding the Fourth Proportional to 21,370.55, 29,491.16 and 12,423.29

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Solution

The fourth proportional to 21,370.55, 29,491.16 and 12,423.29 is: 17,144.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.55 : 29,491.16 = 12,423.29 : x
  2. Step 2: Convert to fraction form
    21,370.55/29,491.16 = 12,423.29/x
  3. Step 3: Cross multiply
    21,370.55x = 29,491.16 × 12,423.29
  4. Step 4: Simplify right side
    21,370.55x = 366,377,023.54
  5. Step 5: Solve for x
    x = 366,377,023.54/21,370.55
  6. Step 6: Final answer
    x = 17,144.02

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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.