Home / 13,220.40-18,244.05-7,252.05

Finding the Fourth Proportional to 13,220.40, 18,244.05 and 7,252.05

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Solution

The fourth proportional to 13,220.40, 18,244.05 and 7,252.05 is: 10,007.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.40 : 18,244.05 = 7,252.05 : x
  2. Step 2: Convert to fraction form
    13,220.40/18,244.05 = 7,252.05/x
  3. Step 3: Cross multiply
    13,220.40x = 18,244.05 × 7,252.05
  4. Step 4: Simplify right side
    13,220.40x = 132,306,762.80
  5. Step 5: Solve for x
    x = 132,306,762.80/13,220.40
  6. Step 6: Final answer
    x = 10,007.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.