Home / 9,990.49-13,787.40-6,012.85

Finding the Fourth Proportional to 9,990.49, 13,787.40 and 6,012.85

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Solution

The fourth proportional to 9,990.49, 13,787.40 and 6,012.85 is: 8,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.49 : 13,787.40 = 6,012.85 : x
  2. Step 2: Convert to fraction form
    9,990.49/13,787.40 = 6,012.85/x
  3. Step 3: Cross multiply
    9,990.49x = 13,787.40 × 6,012.85
  4. Step 4: Simplify right side
    9,990.49x = 82,901,568.09
  5. Step 5: Solve for x
    x = 82,901,568.09/9,990.49
  6. Step 6: Final answer
    x = 8,298.05

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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.