Home / 20,974.46-28,944.74-11,543.02

Finding the Fourth Proportional to 20,974.46, 28,944.74 and 11,543.02

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Solution

The fourth proportional to 20,974.46, 28,944.74 and 11,543.02 is: 15,929.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.46 : 28,944.74 = 11,543.02 : x
  2. Step 2: Convert to fraction form
    20,974.46/28,944.74 = 11,543.02/x
  3. Step 3: Cross multiply
    20,974.46x = 28,944.74 × 11,543.02
  4. Step 4: Simplify right side
    20,974.46x = 334,109,712.71
  5. Step 5: Solve for x
    x = 334,109,712.71/20,974.46
  6. Step 6: Final answer
    x = 15,929.36

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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.