Home / 10,013.20-13,813.32-6,479.44

Finding the Fourth Proportional to 10,013.20, 13,813.32 and 6,479.44

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Solution

The fourth proportional to 10,013.20, 13,813.32 and 6,479.44 is: 8,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,013.20 : 13,813.32 = 6,479.44 : x
  2. Step 2: Convert to fraction form
    10,013.20/13,813.32 = 6,479.44/x
  3. Step 3: Cross multiply
    10,013.20x = 13,813.32 × 6,479.44
  4. Step 4: Simplify right side
    10,013.20x = 89,502,578.14
  5. Step 5: Solve for x
    x = 89,502,578.14/10,013.20
  6. Step 6: Final answer
    x = 8,938.46

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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.