Home / 31,353.92-43,245.60-20,752.64

Finding the Fourth Proportional to 31,353.92, 43,245.60 and 20,752.64

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Solution

The fourth proportional to 31,353.92, 43,245.60 and 20,752.64 is: 28,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.92 : 43,245.60 = 20,752.64 : x
  2. Step 2: Convert to fraction form
    31,353.92/43,245.60 = 20,752.64/x
  3. Step 3: Cross multiply
    31,353.92x = 43,245.60 × 20,752.64
  4. Step 4: Simplify right side
    31,353.92x = 897,460,368.38
  5. Step 5: Solve for x
    x = 897,460,368.38/31,353.92
  6. Step 6: Final answer
    x = 28,623.55

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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.