Home / 13,279.38-18,325.15-7,311.03

Finding the Fourth Proportional to 13,279.38, 18,325.15 and 7,311.03

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Solution

The fourth proportional to 13,279.38, 18,325.15 and 7,311.03 is: 10,089.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.38 : 18,325.15 = 7,311.03 : x
  2. Step 2: Convert to fraction form
    13,279.38/18,325.15 = 7,311.03/x
  3. Step 3: Cross multiply
    13,279.38x = 18,325.15 × 7,311.03
  4. Step 4: Simplify right side
    13,279.38x = 133,975,703.13
  5. Step 5: Solve for x
    x = 133,975,703.13/13,279.38
  6. Step 6: Final answer
    x = 10,089.00

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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.