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Finding the Fourth Proportional to 12,533.40, 18,800.10 and 5,135.40

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Solution

The fourth proportional to 12,533.40, 18,800.10 and 5,135.40 is: 7,703.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,533.40 : 18,800.10 = 5,135.40 : x
  2. Step 2: Convert to fraction form
    12,533.40/18,800.10 = 5,135.40/x
  3. Step 3: Cross multiply
    12,533.40x = 18,800.10 × 5,135.40
  4. Step 4: Simplify right side
    12,533.40x = 96,546,033.54
  5. Step 5: Solve for x
    x = 96,546,033.54/12,533.40
  6. Step 6: Final answer
    x = 7,703.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.