Home / 12,445.36-18,671.28-5,518.24

Finding the Fourth Proportional to 12,445.36, 18,671.28 and 5,518.24

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Solution

The fourth proportional to 12,445.36, 18,671.28 and 5,518.24 is: 8,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.36 : 18,671.28 = 5,518.24 : x
  2. Step 2: Convert to fraction form
    12,445.36/18,671.28 = 5,518.24/x
  3. Step 3: Cross multiply
    12,445.36x = 18,671.28 × 5,518.24
  4. Step 4: Simplify right side
    12,445.36x = 103,032,604.15
  5. Step 5: Solve for x
    x = 103,032,604.15/12,445.36
  6. Step 6: Final answer
    x = 8,278.80

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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.