Home / 10,786.56-14,895.24-8,129.40

Finding the Fourth Proportional to 10,786.56, 14,895.24 and 8,129.40

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Solution

The fourth proportional to 10,786.56, 14,895.24 and 8,129.40 is: 11,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.56 : 14,895.24 = 8,129.40 : x
  2. Step 2: Convert to fraction form
    10,786.56/14,895.24 = 8,129.40/x
  3. Step 3: Cross multiply
    10,786.56x = 14,895.24 × 8,129.40
  4. Step 4: Simplify right side
    10,786.56x = 121,089,364.06
  5. Step 5: Solve for x
    x = 121,089,364.06/10,786.56
  6. Step 6: Final answer
    x = 11,225.95

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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.