Home / 20,087.16-30,129.49-5,295.75

Finding the Fourth Proportional to 20,087.16, 30,129.49 and 5,295.75

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Solution

The fourth proportional to 20,087.16, 30,129.49 and 5,295.75 is: 7,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.16 : 30,129.49 = 5,295.75 : x
  2. Step 2: Convert to fraction form
    20,087.16/30,129.49 = 5,295.75/x
  3. Step 3: Cross multiply
    20,087.16x = 30,129.49 × 5,295.75
  4. Step 4: Simplify right side
    20,087.16x = 159,558,246.67
  5. Step 5: Solve for x
    x = 159,558,246.67/20,087.16
  6. Step 6: Final answer
    x = 7,943.30

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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.