Home / 13,141.56-18,135.36-7,173.12

Finding the Fourth Proportional to 13,141.56, 18,135.36 and 7,173.12

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Solution

The fourth proportional to 13,141.56, 18,135.36 and 7,173.12 is: 9,898.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.56 : 18,135.36 = 7,173.12 : x
  2. Step 2: Convert to fraction form
    13,141.56/18,135.36 = 7,173.12/x
  3. Step 3: Cross multiply
    13,141.56x = 18,135.36 × 7,173.12
  4. Step 4: Simplify right side
    13,141.56x = 130,087,113.52
  5. Step 5: Solve for x
    x = 130,087,113.52/13,141.56
  6. Step 6: Final answer
    x = 9,898.91

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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.