Home / 20,180.70-30,281.85-9,089.10

Finding the Fourth Proportional to 20,180.70, 30,281.85 and 9,089.10

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Solution

The fourth proportional to 20,180.70, 30,281.85 and 9,089.10 is: 13,638.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.70 : 30,281.85 = 9,089.10 : x
  2. Step 2: Convert to fraction form
    20,180.70/30,281.85 = 9,089.10/x
  3. Step 3: Cross multiply
    20,180.70x = 30,281.85 × 9,089.10
  4. Step 4: Simplify right side
    20,180.70x = 275,234,762.84
  5. Step 5: Solve for x
    x = 275,234,762.84/20,180.70
  6. Step 6: Final answer
    x = 13,638.51

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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.