Home / 10,991.46-15,165.72-6,275.64

Finding the Fourth Proportional to 10,991.46, 15,165.72 and 6,275.64

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Solution

The fourth proportional to 10,991.46, 15,165.72 and 6,275.64 is: 8,658.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.46 : 15,165.72 = 6,275.64 : x
  2. Step 2: Convert to fraction form
    10,991.46/15,165.72 = 6,275.64/x
  3. Step 3: Cross multiply
    10,991.46x = 15,165.72 × 6,275.64
  4. Step 4: Simplify right side
    10,991.46x = 95,174,599.06
  5. Step 5: Solve for x
    x = 95,174,599.06/10,991.46
  6. Step 6: Final answer
    x = 8,658.96

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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.