Home / 18,133.74-27,191.70-10,639.22

Finding the Fourth Proportional to 18,133.74, 27,191.70 and 10,639.22

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Solution

The fourth proportional to 18,133.74, 27,191.70 and 10,639.22 is: 15,953.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.74 : 27,191.70 = 10,639.22 : x
  2. Step 2: Convert to fraction form
    18,133.74/27,191.70 = 10,639.22/x
  3. Step 3: Cross multiply
    18,133.74x = 27,191.70 × 10,639.22
  4. Step 4: Simplify right side
    18,133.74x = 289,298,342.52
  5. Step 5: Solve for x
    x = 289,298,342.52/18,133.74
  6. Step 6: Final answer
    x = 15,953.59

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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.