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Finding the Fourth Proportional to 11,349.69, 15,661.65 and 6,313.92

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Solution

The fourth proportional to 11,349.69, 15,661.65 and 6,313.92 is: 8,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,349.69 : 15,661.65 = 6,313.92 : x
  2. Step 2: Convert to fraction form
    11,349.69/15,661.65 = 6,313.92/x
  3. Step 3: Cross multiply
    11,349.69x = 15,661.65 × 6,313.92
  4. Step 4: Simplify right side
    11,349.69x = 98,886,405.17
  5. Step 5: Solve for x
    x = 98,886,405.17/11,349.69
  6. Step 6: Final answer
    x = 8,712.70

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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.