Home / 36,336.90-50,139.06-20,421.30

Finding the Fourth Proportional to 36,336.90, 50,139.06 and 20,421.30

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Solution

The fourth proportional to 36,336.90, 50,139.06 and 20,421.30 is: 28,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,336.90 : 50,139.06 = 20,421.30 : x
  2. Step 2: Convert to fraction form
    36,336.90/50,139.06 = 20,421.30/x
  3. Step 3: Cross multiply
    36,336.90x = 50,139.06 × 20,421.30
  4. Step 4: Simplify right side
    36,336.90x = 1,023,904,785.98
  5. Step 5: Solve for x
    x = 1,023,904,785.98/36,336.90
  6. Step 6: Final answer
    x = 28,178.10

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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.