Home / 13,152.49-18,151.46-7,489.08

Finding the Fourth Proportional to 13,152.49, 18,151.46 and 7,489.08

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Solution

The fourth proportional to 13,152.49, 18,151.46 and 7,489.08 is: 10,335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.49 : 18,151.46 = 7,489.08 : x
  2. Step 2: Convert to fraction form
    13,152.49/18,151.46 = 7,489.08/x
  3. Step 3: Cross multiply
    13,152.49x = 18,151.46 × 7,489.08
  4. Step 4: Simplify right side
    13,152.49x = 135,937,736.06
  5. Step 5: Solve for x
    x = 135,937,736.06/13,152.49
  6. Step 6: Final answer
    x = 10,335.51

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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.