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Finding the Fourth Proportional to 10,907.70, 15,051.11 and 6,191.07

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Solution

The fourth proportional to 10,907.70, 15,051.11 and 6,191.07 is: 8,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,907.70 : 15,051.11 = 6,191.07 : x
  2. Step 2: Convert to fraction form
    10,907.70/15,051.11 = 6,191.07/x
  3. Step 3: Cross multiply
    10,907.70x = 15,051.11 × 6,191.07
  4. Step 4: Simplify right side
    10,907.70x = 93,182,475.59
  5. Step 5: Solve for x
    x = 93,182,475.59/10,907.70
  6. Step 6: Final answer
    x = 8,542.82

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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.