Home / 20,635.07-28,476.50-11,203.65

Finding the Fourth Proportional to 20,635.07, 28,476.50 and 11,203.65

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Solution

The fourth proportional to 20,635.07, 28,476.50 and 11,203.65 is: 15,461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.07 : 28,476.50 = 11,203.65 : x
  2. Step 2: Convert to fraction form
    20,635.07/28,476.50 = 11,203.65/x
  3. Step 3: Cross multiply
    20,635.07x = 28,476.50 × 11,203.65
  4. Step 4: Simplify right side
    20,635.07x = 319,040,683.21
  5. Step 5: Solve for x
    x = 319,040,683.21/20,635.07
  6. Step 6: Final answer
    x = 15,461.09

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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.