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Finding the Fourth Proportional to 15,006.40, 22,509.60 and 12,090.40

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Solution

The fourth proportional to 15,006.40, 22,509.60 and 12,090.40 is: 18,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.40 : 22,509.60 = 12,090.40 : x
  2. Step 2: Convert to fraction form
    15,006.40/22,509.60 = 12,090.40/x
  3. Step 3: Cross multiply
    15,006.40x = 22,509.60 × 12,090.40
  4. Step 4: Simplify right side
    15,006.40x = 272,150,067.84
  5. Step 5: Solve for x
    x = 272,150,067.84/15,006.40
  6. Step 6: Final answer
    x = 18,135.60

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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.