Home / 13,112.18-18,094.88-7,143.71

Finding the Fourth Proportional to 13,112.18, 18,094.88 and 7,143.71

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Solution

The fourth proportional to 13,112.18, 18,094.88 and 7,143.71 is: 9,858.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.18 : 18,094.88 = 7,143.71 : x
  2. Step 2: Convert to fraction form
    13,112.18/18,094.88 = 7,143.71/x
  3. Step 3: Cross multiply
    13,112.18x = 18,094.88 × 7,143.71
  4. Step 4: Simplify right side
    13,112.18x = 129,264,539.49
  5. Step 5: Solve for x
    x = 129,264,539.49/13,112.18
  6. Step 6: Final answer
    x = 9,858.36

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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.