Home / 20,536.39-30,807.76-8,690.23

Finding the Fourth Proportional to 20,536.39, 30,807.76 and 8,690.23

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Solution

The fourth proportional to 20,536.39, 30,807.76 and 8,690.23 is: 13,036.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.39 : 30,807.76 = 8,690.23 : x
  2. Step 2: Convert to fraction form
    20,536.39/30,807.76 = 8,690.23/x
  3. Step 3: Cross multiply
    20,536.39x = 30,807.76 × 8,690.23
  4. Step 4: Simplify right side
    20,536.39x = 267,726,421.44
  5. Step 5: Solve for x
    x = 267,726,421.44/20,536.39
  6. Step 6: Final answer
    x = 13,036.69

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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.