Home / 20,648.18-28,499.03-13,575.26

Finding the Fourth Proportional to 20,648.18, 28,499.03 and 13,575.26

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Solution

The fourth proportional to 20,648.18, 28,499.03 and 13,575.26 is: 18,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.18 : 28,499.03 = 13,575.26 : x
  2. Step 2: Convert to fraction form
    20,648.18/28,499.03 = 13,575.26/x
  3. Step 3: Cross multiply
    20,648.18x = 28,499.03 × 13,575.26
  4. Step 4: Simplify right side
    20,648.18x = 386,881,531.63
  5. Step 5: Solve for x
    x = 386,881,531.63/20,648.18
  6. Step 6: Final answer
    x = 18,736.84

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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.