Home / 20,311.02-28,029.24-11,358.90

Finding the Fourth Proportional to 20,311.02, 28,029.24 and 11,358.90

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Solution

The fourth proportional to 20,311.02, 28,029.24 and 11,358.90 is: 15,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.02 : 28,029.24 = 11,358.90 : x
  2. Step 2: Convert to fraction form
    20,311.02/28,029.24 = 11,358.90/x
  3. Step 3: Cross multiply
    20,311.02x = 28,029.24 × 11,358.90
  4. Step 4: Simplify right side
    20,311.02x = 318,381,334.24
  5. Step 5: Solve for x
    x = 318,381,334.24/20,311.02
  6. Step 6: Final answer
    x = 15,675.30

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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.