Home / 10,681.74-16,011.81-6,991.38

Finding the Fourth Proportional to 10,681.74, 16,011.81 and 6,991.38

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Solution

The fourth proportional to 10,681.74, 16,011.81 and 6,991.38 is: 10,480.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.74 : 16,011.81 = 6,991.38 : x
  2. Step 2: Convert to fraction form
    10,681.74/16,011.81 = 6,991.38/x
  3. Step 3: Cross multiply
    10,681.74x = 16,011.81 × 6,991.38
  4. Step 4: Simplify right side
    10,681.74x = 111,944,648.20
  5. Step 5: Solve for x
    x = 111,944,648.20/10,681.74
  6. Step 6: Final answer
    x = 10,480.00

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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.