Home / 20,364.01-28,103.12-11,411.59

Finding the Fourth Proportional to 20,364.01, 28,103.12 and 11,411.59

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Solution

The fourth proportional to 20,364.01, 28,103.12 and 11,411.59 is: 15,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.01 : 28,103.12 = 11,411.59 : x
  2. Step 2: Convert to fraction form
    20,364.01/28,103.12 = 11,411.59/x
  3. Step 3: Cross multiply
    20,364.01x = 28,103.12 × 11,411.59
  4. Step 4: Simplify right side
    20,364.01x = 320,701,171.17
  5. Step 5: Solve for x
    x = 320,701,171.17/20,364.01
  6. Step 6: Final answer
    x = 15,748.43

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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.