Home / 13,279.77-18,325.40-7,310.29

Finding the Fourth Proportional to 13,279.77, 18,325.40 and 7,310.29

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Solution

The fourth proportional to 13,279.77, 18,325.40 and 7,310.29 is: 10,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.77 : 18,325.40 = 7,310.29 : x
  2. Step 2: Convert to fraction form
    13,279.77/18,325.40 = 7,310.29/x
  3. Step 3: Cross multiply
    13,279.77x = 18,325.40 × 7,310.29
  4. Step 4: Simplify right side
    13,279.77x = 133,963,960.83
  5. Step 5: Solve for x
    x = 133,963,960.83/13,279.77
  6. Step 6: Final answer
    x = 10,087.82

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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.