Home / 13,685.67-20,515.95-8,998.20

Finding the Fourth Proportional to 13,685.67, 20,515.95 and 8,998.20

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Solution

The fourth proportional to 13,685.67, 20,515.95 and 8,998.20 is: 13,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.67 : 20,515.95 = 8,998.20 : x
  2. Step 2: Convert to fraction form
    13,685.67/20,515.95 = 8,998.20/x
  3. Step 3: Cross multiply
    13,685.67x = 20,515.95 × 8,998.20
  4. Step 4: Simplify right side
    13,685.67x = 184,606,621.29
  5. Step 5: Solve for x
    x = 184,606,621.29/13,685.67
  6. Step 6: Final answer
    x = 13,489.05

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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.