Home / 13,442.40-18,549.60-7,473.60

Finding the Fourth Proportional to 13,442.40, 18,549.60 and 7,473.60

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Solution

The fourth proportional to 13,442.40, 18,549.60 and 7,473.60 is: 10,313.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.40 : 18,549.60 = 7,473.60 : x
  2. Step 2: Convert to fraction form
    13,442.40/18,549.60 = 7,473.60/x
  3. Step 3: Cross multiply
    13,442.40x = 18,549.60 × 7,473.60
  4. Step 4: Simplify right side
    13,442.40x = 138,632,290.56
  5. Step 5: Solve for x
    x = 138,632,290.56/13,442.40
  6. Step 6: Final answer
    x = 10,313.06

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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.