Home / 30,138.89-41,592.11-16,528.23

Finding the Fourth Proportional to 30,138.89, 41,592.11 and 16,528.23

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Solution

The fourth proportional to 30,138.89, 41,592.11 and 16,528.23 is: 22,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.89 : 41,592.11 = 16,528.23 : x
  2. Step 2: Convert to fraction form
    30,138.89/41,592.11 = 16,528.23/x
  3. Step 3: Cross multiply
    30,138.89x = 41,592.11 × 16,528.23
  4. Step 4: Simplify right side
    30,138.89x = 687,443,877.62
  5. Step 5: Solve for x
    x = 687,443,877.62/30,138.89
  6. Step 6: Final answer
    x = 22,809.20

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Half scale
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Double scale
Find fourth proportional to 30,139.89, 41,593.49 and 16,529.23
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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.