Home / 20,726.45-28,602.50-11,295

Finding the Fourth Proportional to 20,726.45, 28,602.50 and 11,295

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Solution

The fourth proportional to 20,726.45, 28,602.50 and 11,295 is: 15,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.45 : 28,602.50 = 11,295 : x
  2. Step 2: Convert to fraction form
    20,726.45/28,602.50 = 11,295/x
  3. Step 3: Cross multiply
    20,726.45x = 28,602.50 × 11,295
  4. Step 4: Simplify right side
    20,726.45x = 323,065,181.03
  5. Step 5: Solve for x
    x = 323,065,181.03/20,726.45
  6. Step 6: Final answer
    x = 15,587.10

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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.