Home / 13,720.86-18,934.80-7,433.22

Finding the Fourth Proportional to 13,720.86, 18,934.80 and 7,433.22

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Solution

The fourth proportional to 13,720.86, 18,934.80 and 7,433.22 is: 10,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.86 : 18,934.80 = 7,433.22 : x
  2. Step 2: Convert to fraction form
    13,720.86/18,934.80 = 7,433.22/x
  3. Step 3: Cross multiply
    13,720.86x = 18,934.80 × 7,433.22
  4. Step 4: Simplify right side
    13,720.86x = 140,746,534.06
  5. Step 5: Solve for x
    x = 140,746,534.06/13,720.86
  6. Step 6: Final answer
    x = 10,257.85

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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.