Home / 21,349.26-29,463.12-12,399.57

Finding the Fourth Proportional to 21,349.26, 29,463.12 and 12,399.57

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Solution

The fourth proportional to 21,349.26, 29,463.12 and 12,399.57 is: 17,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.26 : 29,463.12 = 12,399.57 : x
  2. Step 2: Convert to fraction form
    21,349.26/29,463.12 = 12,399.57/x
  3. Step 3: Cross multiply
    21,349.26x = 29,463.12 × 12,399.57
  4. Step 4: Simplify right side
    21,349.26x = 365,330,018.86
  5. Step 5: Solve for x
    x = 365,330,018.86/21,349.26
  6. Step 6: Final answer
    x = 17,112.07

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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.