Home / 13,439.09-18,546.63-7,470.88

Finding the Fourth Proportional to 13,439.09, 18,546.63 and 7,470.88

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Solution

The fourth proportional to 13,439.09, 18,546.63 and 7,470.88 is: 10,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.09 : 18,546.63 = 7,470.88 : x
  2. Step 2: Convert to fraction form
    13,439.09/18,546.63 = 7,470.88/x
  3. Step 3: Cross multiply
    13,439.09x = 18,546.63 × 7,470.88
  4. Step 4: Simplify right side
    13,439.09x = 138,559,647.13
  5. Step 5: Solve for x
    x = 138,559,647.13/13,439.09
  6. Step 6: Final answer
    x = 10,310.20

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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.