Home / 13,102.80-18,081.52-7,360.10

Finding the Fourth Proportional to 13,102.80, 18,081.52 and 7,360.10

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Solution

The fourth proportional to 13,102.80, 18,081.52 and 7,360.10 is: 10,156.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.80 : 18,081.52 = 7,360.10 : x
  2. Step 2: Convert to fraction form
    13,102.80/18,081.52 = 7,360.10/x
  3. Step 3: Cross multiply
    13,102.80x = 18,081.52 × 7,360.10
  4. Step 4: Simplify right side
    13,102.80x = 133,081,795.35
  5. Step 5: Solve for x
    x = 133,081,795.35/13,102.80
  6. Step 6: Final answer
    x = 10,156.74

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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.