Home / 11,121.67-15,351.80-6,875.99

Finding the Fourth Proportional to 11,121.67, 15,351.80 and 6,875.99

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Solution

The fourth proportional to 11,121.67, 15,351.80 and 6,875.99 is: 9,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.67 : 15,351.80 = 6,875.99 : x
  2. Step 2: Convert to fraction form
    11,121.67/15,351.80 = 6,875.99/x
  3. Step 3: Cross multiply
    11,121.67x = 15,351.80 × 6,875.99
  4. Step 4: Simplify right side
    11,121.67x = 105,558,769.71
  5. Step 5: Solve for x
    x = 105,558,769.71/11,121.67
  6. Step 6: Final answer
    x = 9,491.27

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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.