Home / 20,298.50-30,443.70-7,151.39

Finding the Fourth Proportional to 20,298.50, 30,443.70 and 7,151.39

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Solution

The fourth proportional to 20,298.50, 30,443.70 and 7,151.39 is: 10,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.50 : 30,443.70 = 7,151.39 : x
  2. Step 2: Convert to fraction form
    20,298.50/30,443.70 = 7,151.39/x
  3. Step 3: Cross multiply
    20,298.50x = 30,443.70 × 7,151.39
  4. Step 4: Simplify right side
    20,298.50x = 217,714,771.74
  5. Step 5: Solve for x
    x = 217,714,771.74/20,298.50
  6. Step 6: Final answer
    x = 10,725.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.