Home / 22,129.38-30,511.95-18,081.21

Finding the Fourth Proportional to 22,129.38, 30,511.95 and 18,081.21

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Solution

The fourth proportional to 22,129.38, 30,511.95 and 18,081.21 is: 24,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,129.38 : 30,511.95 = 18,081.21 : x
  2. Step 2: Convert to fraction form
    22,129.38/30,511.95 = 18,081.21/x
  3. Step 3: Cross multiply
    22,129.38x = 30,511.95 × 18,081.21
  4. Step 4: Simplify right side
    22,129.38x = 551,692,975.46
  5. Step 5: Solve for x
    x = 551,692,975.46/22,129.38
  6. Step 6: Final answer
    x = 24,930.34

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Half scale
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Double scale
Find fourth proportional to 22,130.38, 30,513.33 and 18,082.21
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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.