Home / 10,639.32-14,650.20-10,015.88

Finding the Fourth Proportional to 10,639.32, 14,650.20 and 10,015.88

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Solution

The fourth proportional to 10,639.32, 14,650.20 and 10,015.88 is: 13,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.32 : 14,650.20 = 10,015.88 : x
  2. Step 2: Convert to fraction form
    10,639.32/14,650.20 = 10,015.88/x
  3. Step 3: Cross multiply
    10,639.32x = 14,650.20 × 10,015.88
  4. Step 4: Simplify right side
    10,639.32x = 146,734,645.18
  5. Step 5: Solve for x
    x = 146,734,645.18/10,639.32
  6. Step 6: Final answer
    x = 13,791.73

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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.