Home / 21,207.70-29,264.52-11,775.28

Finding the Fourth Proportional to 21,207.70, 29,264.52 and 11,775.28

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Solution

The fourth proportional to 21,207.70, 29,264.52 and 11,775.28 is: 16,248.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.70 : 29,264.52 = 11,775.28 : x
  2. Step 2: Convert to fraction form
    21,207.70/29,264.52 = 11,775.28/x
  3. Step 3: Cross multiply
    21,207.70x = 29,264.52 × 11,775.28
  4. Step 4: Simplify right side
    21,207.70x = 344,597,917.07
  5. Step 5: Solve for x
    x = 344,597,917.07/21,207.70
  6. Step 6: Final answer
    x = 16,248.72

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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.