Home / 19,715.40-27,206.90-11,217.34

Finding the Fourth Proportional to 19,715.40, 27,206.90 and 11,217.34

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Solution

The fourth proportional to 19,715.40, 27,206.90 and 11,217.34 is: 15,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.40 : 27,206.90 = 11,217.34 : x
  2. Step 2: Convert to fraction form
    19,715.40/27,206.90 = 11,217.34/x
  3. Step 3: Cross multiply
    19,715.40x = 27,206.90 × 11,217.34
  4. Step 4: Simplify right side
    19,715.40x = 305,188,959.56
  5. Step 5: Solve for x
    x = 305,188,959.56/19,715.40
  6. Step 6: Final answer
    x = 15,479.72

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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.