Home / 12,939.23-17,856.15-7,350.23

Finding the Fourth Proportional to 12,939.23, 17,856.15 and 7,350.23

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Solution

The fourth proportional to 12,939.23, 17,856.15 and 7,350.23 is: 10,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.23 : 17,856.15 = 7,350.23 : x
  2. Step 2: Convert to fraction form
    12,939.23/17,856.15 = 7,350.23/x
  3. Step 3: Cross multiply
    12,939.23x = 17,856.15 × 7,350.23
  4. Step 4: Simplify right side
    12,939.23x = 131,246,809.41
  5. Step 5: Solve for x
    x = 131,246,809.41/12,939.23
  6. Step 6: Final answer
    x = 10,143.32

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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.