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Finding the Fourth Proportional to 10,865.13, 14,994.78 and 6,884.79

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Solution

The fourth proportional to 10,865.13, 14,994.78 and 6,884.79 is: 9,501.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.13 : 14,994.78 = 6,884.79 : x
  2. Step 2: Convert to fraction form
    10,865.13/14,994.78 = 6,884.79/x
  3. Step 3: Cross multiply
    10,865.13x = 14,994.78 × 6,884.79
  4. Step 4: Simplify right side
    10,865.13x = 103,235,911.40
  5. Step 5: Solve for x
    x = 103,235,911.40/10,865.13
  6. Step 6: Final answer
    x = 9,501.58

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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.