Home / 9,990.11-14,991.85-4,146.72

Finding the Fourth Proportional to 9,990.11, 14,991.85 and 4,146.72

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Solution

The fourth proportional to 9,990.11, 14,991.85 and 4,146.72 is: 6,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.11 : 14,991.85 = 4,146.72 : x
  2. Step 2: Convert to fraction form
    9,990.11/14,991.85 = 4,146.72/x
  3. Step 3: Cross multiply
    9,990.11x = 14,991.85 × 4,146.72
  4. Step 4: Simplify right side
    9,990.11x = 62,167,004.23
  5. Step 5: Solve for x
    x = 62,167,004.23/9,990.11
  6. Step 6: Final answer
    x = 6,222.85

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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.