Home / 20,364.11-28,102.49-11,411.74

Finding the Fourth Proportional to 20,364.11, 28,102.49 and 11,411.74

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Solution

The fourth proportional to 20,364.11, 28,102.49 and 11,411.74 is: 15,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.11 : 28,102.49 = 11,411.74 : x
  2. Step 2: Convert to fraction form
    20,364.11/28,102.49 = 11,411.74/x
  3. Step 3: Cross multiply
    20,364.11x = 28,102.49 × 11,411.74
  4. Step 4: Simplify right side
    20,364.11x = 320,698,236.21
  5. Step 5: Solve for x
    x = 320,698,236.21/20,364.11
  6. Step 6: Final answer
    x = 15,748.21

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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.