Home / 12,939.43-19,408.99-9,124.36

Finding the Fourth Proportional to 12,939.43, 19,408.99 and 9,124.36

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Solution

The fourth proportional to 12,939.43, 19,408.99 and 9,124.36 is: 13,686.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.43 : 19,408.99 = 9,124.36 : x
  2. Step 2: Convert to fraction form
    12,939.43/19,408.99 = 9,124.36/x
  3. Step 3: Cross multiply
    12,939.43x = 19,408.99 × 9,124.36
  4. Step 4: Simplify right side
    12,939.43x = 177,094,612.00
  5. Step 5: Solve for x
    x = 177,094,612.00/12,939.43
  6. Step 6: Final answer
    x = 13,686.43

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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.