Home / 21,013.17-28,998.17-11,453.05

Finding the Fourth Proportional to 21,013.17, 28,998.17 and 11,453.05

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Solution

The fourth proportional to 21,013.17, 28,998.17 and 11,453.05 is: 15,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.17 : 28,998.17 = 11,453.05 : x
  2. Step 2: Convert to fraction form
    21,013.17/28,998.17 = 11,453.05/x
  3. Step 3: Cross multiply
    21,013.17x = 28,998.17 × 11,453.05
  4. Step 4: Simplify right side
    21,013.17x = 332,117,490.92
  5. Step 5: Solve for x
    x = 332,117,490.92/21,013.17
  6. Step 6: Final answer
    x = 15,805.21

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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.