Home / 20,087.46-30,131.37-5,298.48

Finding the Fourth Proportional to 20,087.46, 30,131.37 and 5,298.48

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Solution

The fourth proportional to 20,087.46, 30,131.37 and 5,298.48 is: 7,947.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.46 : 30,131.37 = 5,298.48 : x
  2. Step 2: Convert to fraction form
    20,087.46/30,131.37 = 5,298.48/x
  3. Step 3: Cross multiply
    20,087.46x = 30,131.37 × 5,298.48
  4. Step 4: Simplify right side
    20,087.46x = 159,650,461.32
  5. Step 5: Solve for x
    x = 159,650,461.32/20,087.46
  6. Step 6: Final answer
    x = 7,947.77

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Double scale
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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.