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Finding the Fourth Proportional to 10,859.69, 14,998.65 and 7,316.75

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Solution

The fourth proportional to 10,859.69, 14,998.65 and 7,316.75 is: 10,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.69 : 14,998.65 = 7,316.75 : x
  2. Step 2: Convert to fraction form
    10,859.69/14,998.65 = 7,316.75/x
  3. Step 3: Cross multiply
    10,859.69x = 14,998.65 × 7,316.75
  4. Step 4: Simplify right side
    10,859.69x = 109,741,372.39
  5. Step 5: Solve for x
    x = 109,741,372.39/10,859.69
  6. Step 6: Final answer
    x = 10,105.39

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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.