Home / 10,665.20-16,005.80-5,468.40

Finding the Fourth Proportional to 10,665.20, 16,005.80 and 5,468.40

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Solution

The fourth proportional to 10,665.20, 16,005.80 and 5,468.40 is: 8,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.20 : 16,005.80 = 5,468.40 : x
  2. Step 2: Convert to fraction form
    10,665.20/16,005.80 = 5,468.40/x
  3. Step 3: Cross multiply
    10,665.20x = 16,005.80 × 5,468.40
  4. Step 4: Simplify right side
    10,665.20x = 87,526,116.72
  5. Step 5: Solve for x
    x = 87,526,116.72/10,665.20
  6. Step 6: Final answer
    x = 8,206.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.