Home / 20,155.23-30,225.60-7,671.93

Finding the Fourth Proportional to 20,155.23, 30,225.60 and 7,671.93

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Solution

The fourth proportional to 20,155.23, 30,225.60 and 7,671.93 is: 11,505.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.23 : 30,225.60 = 7,671.93 : x
  2. Step 2: Convert to fraction form
    20,155.23/30,225.60 = 7,671.93/x
  3. Step 3: Cross multiply
    20,155.23x = 30,225.60 × 7,671.93
  4. Step 4: Simplify right side
    20,155.23x = 231,888,687.41
  5. Step 5: Solve for x
    x = 231,888,687.41/20,155.23
  6. Step 6: Final answer
    x = 11,505.14

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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.