Home / 10,279.84-15,408.53-5,275.21

Finding the Fourth Proportional to 10,279.84, 15,408.53 and 5,275.21

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Solution

The fourth proportional to 10,279.84, 15,408.53 and 5,275.21 is: 7,907.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.84 : 15,408.53 = 5,275.21 : x
  2. Step 2: Convert to fraction form
    10,279.84/15,408.53 = 5,275.21/x
  3. Step 3: Cross multiply
    10,279.84x = 15,408.53 × 5,275.21
  4. Step 4: Simplify right side
    10,279.84x = 81,283,128.12
  5. Step 5: Solve for x
    x = 81,283,128.12/10,279.84
  6. Step 6: Final answer
    x = 7,907.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.