Home / 7,943.11-11,011.70-7,521.81

Finding the Fourth Proportional to 7,943.11, 11,011.70 and 7,521.81

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Solution

The fourth proportional to 7,943.11, 11,011.70 and 7,521.81 is: 10,427.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.11 : 11,011.70 = 7,521.81 : x
  2. Step 2: Convert to fraction form
    7,943.11/11,011.70 = 7,521.81/x
  3. Step 3: Cross multiply
    7,943.11x = 11,011.70 × 7,521.81
  4. Step 4: Simplify right side
    7,943.11x = 82,827,912.32
  5. Step 5: Solve for x
    x = 82,827,912.32/7,943.11
  6. Step 6: Final answer
    x = 10,427.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.