Home / 13,439.07-18,546.35-7,470.99

Finding the Fourth Proportional to 13,439.07, 18,546.35 and 7,470.99

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Solution

The fourth proportional to 13,439.07, 18,546.35 and 7,470.99 is: 10,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.07 : 18,546.35 = 7,470.99 : x
  2. Step 2: Convert to fraction form
    13,439.07/18,546.35 = 7,470.99/x
  3. Step 3: Cross multiply
    13,439.07x = 18,546.35 × 7,470.99
  4. Step 4: Simplify right side
    13,439.07x = 138,559,558.03
  5. Step 5: Solve for x
    x = 138,559,558.03/13,439.07
  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.