Home / 13,685.22-18,885.04-7,718.15

Finding the Fourth Proportional to 13,685.22, 18,885.04 and 7,718.15

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Solution

The fourth proportional to 13,685.22, 18,885.04 and 7,718.15 is: 10,650.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.22 : 18,885.04 = 7,718.15 : x
  2. Step 2: Convert to fraction form
    13,685.22/18,885.04 = 7,718.15/x
  3. Step 3: Cross multiply
    13,685.22x = 18,885.04 × 7,718.15
  4. Step 4: Simplify right side
    13,685.22x = 145,757,599.39
  5. Step 5: Solve for x
    x = 145,757,599.39/13,685.22
  6. Step 6: Final answer
    x = 10,650.73

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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.