Home / 13,470.80-20,200.20-7,228.94

Finding the Fourth Proportional to 13,470.80, 20,200.20 and 7,228.94

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Solution

The fourth proportional to 13,470.80, 20,200.20 and 7,228.94 is: 10,840.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.80 : 20,200.20 = 7,228.94 : x
  2. Step 2: Convert to fraction form
    13,470.80/20,200.20 = 7,228.94/x
  3. Step 3: Cross multiply
    13,470.80x = 20,200.20 × 7,228.94
  4. Step 4: Simplify right side
    13,470.80x = 146,026,033.79
  5. Step 5: Solve for x
    x = 146,026,033.79/13,470.80
  6. Step 6: Final answer
    x = 10,840.19

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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.