Home / 20,726.88-28,602.40-11,775.36

Finding the Fourth Proportional to 20,726.88, 28,602.40 and 11,775.36

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Solution

The fourth proportional to 20,726.88, 28,602.40 and 11,775.36 is: 16,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.88 : 28,602.40 = 11,775.36 : x
  2. Step 2: Convert to fraction form
    20,726.88/28,602.40 = 11,775.36/x
  3. Step 3: Cross multiply
    20,726.88x = 28,602.40 × 11,775.36
  4. Step 4: Simplify right side
    20,726.88x = 336,803,556.86
  5. Step 5: Solve for x
    x = 336,803,556.86/20,726.88
  6. Step 6: Final answer
    x = 16,249.60

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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.