Home / 13,081.16-18,052.02-7,112.90

Finding the Fourth Proportional to 13,081.16, 18,052.02 and 7,112.90

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Solution

The fourth proportional to 13,081.16, 18,052.02 and 7,112.90 is: 9,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.16 : 18,052.02 = 7,112.90 : x
  2. Step 2: Convert to fraction form
    13,081.16/18,052.02 = 7,112.90/x
  3. Step 3: Cross multiply
    13,081.16x = 18,052.02 × 7,112.90
  4. Step 4: Simplify right side
    13,081.16x = 128,402,213.06
  5. Step 5: Solve for x
    x = 128,402,213.06/13,081.16
  6. Step 6: Final answer
    x = 9,815.81

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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.