Home / 15,051.78-20,770.16-9,081.27

Finding the Fourth Proportional to 15,051.78, 20,770.16 and 9,081.27

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Solution

The fourth proportional to 15,051.78, 20,770.16 and 9,081.27 is: 12,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.78 : 20,770.16 = 9,081.27 : x
  2. Step 2: Convert to fraction form
    15,051.78/20,770.16 = 9,081.27/x
  3. Step 3: Cross multiply
    15,051.78x = 20,770.16 × 9,081.27
  4. Step 4: Simplify right side
    15,051.78x = 188,619,385.50
  5. Step 5: Solve for x
    x = 188,619,385.50/15,051.78
  6. Step 6: Final answer
    x = 12,531.37

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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.