Home / 21,243.92-29,313.16-11,812.24

Finding the Fourth Proportional to 21,243.92, 29,313.16 and 11,812.24

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Solution

The fourth proportional to 21,243.92, 29,313.16 and 11,812.24 is: 16,298.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.92 : 29,313.16 = 11,812.24 : x
  2. Step 2: Convert to fraction form
    21,243.92/29,313.16 = 11,812.24/x
  3. Step 3: Cross multiply
    21,243.92x = 29,313.16 × 11,812.24
  4. Step 4: Simplify right side
    21,243.92x = 346,254,081.08
  5. Step 5: Solve for x
    x = 346,254,081.08/21,243.92
  6. Step 6: Final answer
    x = 16,298.97

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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.