Home / 13,279.19-18,325.35-7,310.86

Finding the Fourth Proportional to 13,279.19, 18,325.35 and 7,310.86

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Solution

The fourth proportional to 13,279.19, 18,325.35 and 7,310.86 is: 10,089.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.19 : 18,325.35 = 7,310.86 : x
  2. Step 2: Convert to fraction form
    13,279.19/18,325.35 = 7,310.86/x
  3. Step 3: Cross multiply
    13,279.19x = 18,325.35 × 7,310.86
  4. Step 4: Simplify right side
    13,279.19x = 133,974,068.30
  5. Step 5: Solve for x
    x = 133,974,068.30/13,279.19
  6. Step 6: Final answer
    x = 10,089.02

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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.