Home / 12,418.15-17,143.40-9,579.15

Finding the Fourth Proportional to 12,418.15, 17,143.40 and 9,579.15

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Solution

The fourth proportional to 12,418.15, 17,143.40 and 9,579.15 is: 13,224.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.15 : 17,143.40 = 9,579.15 : x
  2. Step 2: Convert to fraction form
    12,418.15/17,143.40 = 9,579.15/x
  3. Step 3: Cross multiply
    12,418.15x = 17,143.40 × 9,579.15
  4. Step 4: Simplify right side
    12,418.15x = 164,219,152.21
  5. Step 5: Solve for x
    x = 164,219,152.21/12,418.15
  6. Step 6: Final answer
    x = 13,224.12

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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.