Home / 20,782.42-31,165.39-12,023.48

Finding the Fourth Proportional to 20,782.42, 31,165.39 and 12,023.48

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Solution

The fourth proportional to 20,782.42, 31,165.39 and 12,023.48 is: 18,030.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.42 : 31,165.39 = 12,023.48 : x
  2. Step 2: Convert to fraction form
    20,782.42/31,165.39 = 12,023.48/x
  3. Step 3: Cross multiply
    20,782.42x = 31,165.39 × 12,023.48
  4. Step 4: Simplify right side
    20,782.42x = 374,716,536.30
  5. Step 5: Solve for x
    x = 374,716,536.30/20,782.42
  6. Step 6: Final answer
    x = 18,030.46

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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.