Home / 13,681.18-20,560.25-8,135.52

Finding the Fourth Proportional to 13,681.18, 20,560.25 and 8,135.52

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Solution

The fourth proportional to 13,681.18, 20,560.25 and 8,135.52 is: 12,226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.18 : 20,560.25 = 8,135.52 : x
  2. Step 2: Convert to fraction form
    13,681.18/20,560.25 = 8,135.52/x
  3. Step 3: Cross multiply
    13,681.18x = 20,560.25 × 8,135.52
  4. Step 4: Simplify right side
    13,681.18x = 167,268,325.08
  5. Step 5: Solve for x
    x = 167,268,325.08/13,681.18
  6. Step 6: Final answer
    x = 12,226.16

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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.