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Finding the Fourth Proportional to 11,313.51, 15,613.07 and 6,836.40

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Solution

The fourth proportional to 11,313.51, 15,613.07 and 6,836.40 is: 9,434.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.51 : 15,613.07 = 6,836.40 : x
  2. Step 2: Convert to fraction form
    11,313.51/15,613.07 = 6,836.40/x
  3. Step 3: Cross multiply
    11,313.51x = 15,613.07 × 6,836.40
  4. Step 4: Simplify right side
    11,313.51x = 106,737,191.75
  5. Step 5: Solve for x
    x = 106,737,191.75/11,313.51
  6. Step 6: Final answer
    x = 9,434.49

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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.