Home / 21,253.68-29,330.16-11,822.28

Finding the Fourth Proportional to 21,253.68, 29,330.16 and 11,822.28

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Solution

The fourth proportional to 21,253.68, 29,330.16 and 11,822.28 is: 16,314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.68 : 29,330.16 = 11,822.28 : x
  2. Step 2: Convert to fraction form
    21,253.68/29,330.16 = 11,822.28/x
  3. Step 3: Cross multiply
    21,253.68x = 29,330.16 × 11,822.28
  4. Step 4: Simplify right side
    21,253.68x = 346,749,363.96
  5. Step 5: Solve for x
    x = 346,749,363.96/21,253.68
  6. Step 6: Final answer
    x = 16,314.79

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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.