Home / 20,087.21-30,131.00-5,298.23

Finding the Fourth Proportional to 20,087.21, 30,131.00 and 5,298.23

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Solution

The fourth proportional to 20,087.21, 30,131.00 and 5,298.23 is: 7,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.21 : 30,131.00 = 5,298.23 : x
  2. Step 2: Convert to fraction form
    20,087.21/30,131.00 = 5,298.23/x
  3. Step 3: Cross multiply
    20,087.21x = 30,131.00 × 5,298.23
  4. Step 4: Simplify right side
    20,087.21x = 159,640,941.64
  5. Step 5: Solve for x
    x = 159,640,941.64/20,087.21
  6. Step 6: Final answer
    x = 7,947.39

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Double scale
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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.