Home / 13,279.83-18,326.28-7,311.63

Finding the Fourth Proportional to 13,279.83, 18,326.28 and 7,311.63

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Solution

The fourth proportional to 13,279.83, 18,326.28 and 7,311.63 is: 10,090.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.83 : 18,326.28 = 7,311.63 : x
  2. Step 2: Convert to fraction form
    13,279.83/18,326.28 = 7,311.63/x
  3. Step 3: Cross multiply
    13,279.83x = 18,326.28 × 7,311.63
  4. Step 4: Simplify right side
    13,279.83x = 133,994,978.64
  5. Step 5: Solve for x
    x = 133,994,978.64/13,279.83
  6. Step 6: Final answer
    x = 10,090.11

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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.