Home / 10,956.75-15,120.32-6,243.77

Finding the Fourth Proportional to 10,956.75, 15,120.32 and 6,243.77

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Solution

The fourth proportional to 10,956.75, 15,120.32 and 6,243.77 is: 8,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.75 : 15,120.32 = 6,243.77 : x
  2. Step 2: Convert to fraction form
    10,956.75/15,120.32 = 6,243.77/x
  3. Step 3: Cross multiply
    10,956.75x = 15,120.32 × 6,243.77
  4. Step 4: Simplify right side
    10,956.75x = 94,407,693.59
  5. Step 5: Solve for x
    x = 94,407,693.59/10,956.75
  6. Step 6: Final answer
    x = 8,616.40

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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.