Home / 20,287.30-30,428.55-5,495.30

Finding the Fourth Proportional to 20,287.30, 30,428.55 and 5,495.30

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Solution

The fourth proportional to 20,287.30, 30,428.55 and 5,495.30 is: 8,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.30 : 30,428.55 = 5,495.30 : x
  2. Step 2: Convert to fraction form
    20,287.30/30,428.55 = 5,495.30/x
  3. Step 3: Cross multiply
    20,287.30x = 30,428.55 × 5,495.30
  4. Step 4: Simplify right side
    20,287.30x = 167,214,010.82
  5. Step 5: Solve for x
    x = 167,214,010.82/20,287.30
  6. Step 6: Final answer
    x = 8,242.30

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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.