Home / 20,397.02-28,145.85-11,899.94

Finding the Fourth Proportional to 20,397.02, 28,145.85 and 11,899.94

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Solution

The fourth proportional to 20,397.02, 28,145.85 and 11,899.94 is: 16,420.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.02 : 28,145.85 = 11,899.94 : x
  2. Step 2: Convert to fraction form
    20,397.02/28,145.85 = 11,899.94/x
  3. Step 3: Cross multiply
    20,397.02x = 28,145.85 × 11,899.94
  4. Step 4: Simplify right side
    20,397.02x = 334,933,926.25
  5. Step 5: Solve for x
    x = 334,933,926.25/20,397.02
  6. Step 6: Final answer
    x = 16,420.73

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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.