Home / 13,721.86-18,936.15-7,434.23

Finding the Fourth Proportional to 13,721.86, 18,936.15 and 7,434.23

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Solution

The fourth proportional to 13,721.86, 18,936.15 and 7,434.23 is: 10,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.86 : 18,936.15 = 7,434.23 : x
  2. Step 2: Convert to fraction form
    13,721.86/18,936.15 = 7,434.23/x
  3. Step 3: Cross multiply
    13,721.86x = 18,936.15 × 7,434.23
  4. Step 4: Simplify right side
    13,721.86x = 140,775,694.41
  5. Step 5: Solve for x
    x = 140,775,694.41/13,721.86
  6. Step 6: Final answer
    x = 10,259.23

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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.