Home / 13,220.48-18,242.88-7,554.80

Finding the Fourth Proportional to 13,220.48, 18,242.88 and 7,554.80

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Solution

The fourth proportional to 13,220.48, 18,242.88 and 7,554.80 is: 10,424.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.48 : 18,242.88 = 7,554.80 : x
  2. Step 2: Convert to fraction form
    13,220.48/18,242.88 = 7,554.80/x
  3. Step 3: Cross multiply
    13,220.48x = 18,242.88 × 7,554.80
  4. Step 4: Simplify right side
    13,220.48x = 137,821,309.82
  5. Step 5: Solve for x
    x = 137,821,309.82/13,220.48
  6. Step 6: Final answer
    x = 10,424.83

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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.