Home / 20,221.39-30,345.95-7,073.74

Finding the Fourth Proportional to 20,221.39, 30,345.95 and 7,073.74

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Solution

The fourth proportional to 20,221.39, 30,345.95 and 7,073.74 is: 10,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.39 : 30,345.95 = 7,073.74 : x
  2. Step 2: Convert to fraction form
    20,221.39/30,345.95 = 7,073.74/x
  3. Step 3: Cross multiply
    20,221.39x = 30,345.95 × 7,073.74
  4. Step 4: Simplify right side
    20,221.39x = 214,659,360.35
  5. Step 5: Solve for x
    x = 214,659,360.35/20,221.39
  6. Step 6: Final answer
    x = 10,615.46

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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.