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Finding the Fourth Proportional to 10,865.58, 14,996.78 and 6,618.03

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Solution

The fourth proportional to 10,865.58, 14,996.78 and 6,618.03 is: 9,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.58 : 14,996.78 = 6,618.03 : x
  2. Step 2: Convert to fraction form
    10,865.58/14,996.78 = 6,618.03/x
  3. Step 3: Cross multiply
    10,865.58x = 14,996.78 × 6,618.03
  4. Step 4: Simplify right side
    10,865.58x = 99,249,139.94
  5. Step 5: Solve for x
    x = 99,249,139.94/10,865.58
  6. Step 6: Final answer
    x = 9,134.27

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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.