Home / 11,156.20-15,394.04-6,678.92

Finding the Fourth Proportional to 11,156.20, 15,394.04 and 6,678.92

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Solution

The fourth proportional to 11,156.20, 15,394.04 and 6,678.92 is: 9,216.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.20 : 15,394.04 = 6,678.92 : x
  2. Step 2: Convert to fraction form
    11,156.20/15,394.04 = 6,678.92/x
  3. Step 3: Cross multiply
    11,156.20x = 15,394.04 × 6,678.92
  4. Step 4: Simplify right side
    11,156.20x = 102,815,561.64
  5. Step 5: Solve for x
    x = 102,815,561.64/11,156.20
  6. Step 6: Final answer
    x = 9,216.00

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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.