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Finding the Fourth Proportional to 10,955.65, 15,125.73 and 8,433.02

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Solution

The fourth proportional to 10,955.65, 15,125.73 and 8,433.02 is: 11,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.65 : 15,125.73 = 8,433.02 : x
  2. Step 2: Convert to fraction form
    10,955.65/15,125.73 = 8,433.02/x
  3. Step 3: Cross multiply
    10,955.65x = 15,125.73 × 8,433.02
  4. Step 4: Simplify right side
    10,955.65x = 127,555,583.60
  5. Step 5: Solve for x
    x = 127,555,583.60/10,955.65
  6. Step 6: Final answer
    x = 11,642.90

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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.