Home / 13,112.17-18,094.74-7,143.82

Finding the Fourth Proportional to 13,112.17, 18,094.74 and 7,143.82

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Solution

The fourth proportional to 13,112.17, 18,094.74 and 7,143.82 is: 9,858.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.17 : 18,094.74 = 7,143.82 : x
  2. Step 2: Convert to fraction form
    13,112.17/18,094.74 = 7,143.82/x
  3. Step 3: Cross multiply
    13,112.17x = 18,094.74 × 7,143.82
  4. Step 4: Simplify right side
    13,112.17x = 129,265,565.51
  5. Step 5: Solve for x
    x = 129,265,565.51/13,112.17
  6. Step 6: Final answer
    x = 9,858.44

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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.