Home / 20,974.77-28,944.95-11,543.13

Finding the Fourth Proportional to 20,974.77, 28,944.95 and 11,543.13

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Solution

The fourth proportional to 20,974.77, 28,944.95 and 11,543.13 is: 15,929.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.77 : 28,944.95 = 11,543.13 : x
  2. Step 2: Convert to fraction form
    20,974.77/28,944.95 = 11,543.13/x
  3. Step 3: Cross multiply
    20,974.77x = 28,944.95 × 11,543.13
  4. Step 4: Simplify right side
    20,974.77x = 334,115,262.98
  5. Step 5: Solve for x
    x = 334,115,262.98/20,974.77
  6. Step 6: Final answer
    x = 15,929.39

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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.