Home / 20,320.60-30,480.90-9,925.06

Finding the Fourth Proportional to 20,320.60, 30,480.90 and 9,925.06

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Solution

The fourth proportional to 20,320.60, 30,480.90 and 9,925.06 is: 14,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.60 : 30,480.90 = 9,925.06 : x
  2. Step 2: Convert to fraction form
    20,320.60/30,480.90 = 9,925.06/x
  3. Step 3: Cross multiply
    20,320.60x = 30,480.90 × 9,925.06
  4. Step 4: Simplify right side
    20,320.60x = 302,524,761.35
  5. Step 5: Solve for x
    x = 302,524,761.35/20,320.60
  6. Step 6: Final answer
    x = 14,887.59

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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.