Home / 20,747.35-28,631.37-11,316.07

Finding the Fourth Proportional to 20,747.35, 28,631.37 and 11,316.07

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Solution

The fourth proportional to 20,747.35, 28,631.37 and 11,316.07 is: 15,616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.35 : 28,631.37 = 11,316.07 : x
  2. Step 2: Convert to fraction form
    20,747.35/28,631.37 = 11,316.07/x
  3. Step 3: Cross multiply
    20,747.35x = 28,631.37 × 11,316.07
  4. Step 4: Simplify right side
    20,747.35x = 323,994,587.12
  5. Step 5: Solve for x
    x = 323,994,587.12/20,747.35
  6. Step 6: Final answer
    x = 15,616.19

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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.