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Finding the Fourth Proportional to 20,693.70, 31,040.55 and 5,903.10

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Solution

The fourth proportional to 20,693.70, 31,040.55 and 5,903.10 is: 8,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.70 : 31,040.55 = 5,903.10 : x
  2. Step 2: Convert to fraction form
    20,693.70/31,040.55 = 5,903.10/x
  3. Step 3: Cross multiply
    20,693.70x = 31,040.55 × 5,903.10
  4. Step 4: Simplify right side
    20,693.70x = 183,235,470.71
  5. Step 5: Solve for x
    x = 183,235,470.71/20,693.70
  6. Step 6: Final answer
    x = 8,854.65

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Similar ratio
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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.