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Finding the Fourth Proportional to 11,318.65, 15,619.01 and 7,069.46

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Solution

The fourth proportional to 11,318.65, 15,619.01 and 7,069.46 is: 9,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.65 : 15,619.01 = 7,069.46 : x
  2. Step 2: Convert to fraction form
    11,318.65/15,619.01 = 7,069.46/x
  3. Step 3: Cross multiply
    11,318.65x = 15,619.01 × 7,069.46
  4. Step 4: Simplify right side
    11,318.65x = 110,417,966.43
  5. Step 5: Solve for x
    x = 110,417,966.43/11,318.65
  6. Step 6: Final answer
    x = 9,755.40

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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.