Home / 20,726.90-28,603.16-11,295.46

Finding the Fourth Proportional to 20,726.90, 28,603.16 and 11,295.46

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Solution

The fourth proportional to 20,726.90, 28,603.16 and 11,295.46 is: 15,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.90 : 28,603.16 = 11,295.46 : x
  2. Step 2: Convert to fraction form
    20,726.90/28,603.16 = 11,295.46/x
  3. Step 3: Cross multiply
    20,726.90x = 28,603.16 × 11,295.46
  4. Step 4: Simplify right side
    20,726.90x = 323,085,849.65
  5. Step 5: Solve for x
    x = 323,085,849.65/20,726.90
  6. Step 6: Final answer
    x = 15,587.76

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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.