Home / 10,015.38-13,820.85-6,480.63

Finding the Fourth Proportional to 10,015.38, 13,820.85 and 6,480.63

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Solution

The fourth proportional to 10,015.38, 13,820.85 and 6,480.63 is: 8,943.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.38 : 13,820.85 = 6,480.63 : x
  2. Step 2: Convert to fraction form
    10,015.38/13,820.85 = 6,480.63/x
  3. Step 3: Cross multiply
    10,015.38x = 13,820.85 × 6,480.63
  4. Step 4: Simplify right side
    10,015.38x = 89,567,815.14
  5. Step 5: Solve for x
    x = 89,567,815.14/10,015.38
  6. Step 6: Final answer
    x = 8,943.03

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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.