Home / 13,440.32-18,548.84-7,473.20

Finding the Fourth Proportional to 13,440.32, 18,548.84 and 7,473.20

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Solution

The fourth proportional to 13,440.32, 18,548.84 and 7,473.20 is: 10,313.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.32 : 18,548.84 = 7,473.20 : x
  2. Step 2: Convert to fraction form
    13,440.32/18,548.84 = 7,473.20/x
  3. Step 3: Cross multiply
    13,440.32x = 18,548.84 × 7,473.20
  4. Step 4: Simplify right side
    13,440.32x = 138,619,191.09
  5. Step 5: Solve for x
    x = 138,619,191.09/13,440.32
  6. Step 6: Final answer
    x = 10,313.68

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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.