Home / 21,006.92-28,990.28-11,447.59

Finding the Fourth Proportional to 21,006.92, 28,990.28 and 11,447.59

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Solution

The fourth proportional to 21,006.92, 28,990.28 and 11,447.59 is: 15,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.92 : 28,990.28 = 11,447.59 : x
  2. Step 2: Convert to fraction form
    21,006.92/28,990.28 = 11,447.59/x
  3. Step 3: Cross multiply
    21,006.92x = 28,990.28 × 11,447.59
  4. Step 4: Simplify right side
    21,006.92x = 331,868,899.26
  5. Step 5: Solve for x
    x = 331,868,899.26/21,006.92
  6. Step 6: Final answer
    x = 15,798.08

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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.