Home / 20,364.06-28,102.40-11,411.64

Finding the Fourth Proportional to 20,364.06, 28,102.40 and 11,411.64

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Solution

The fourth proportional to 20,364.06, 28,102.40 and 11,411.64 is: 15,748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.06 : 28,102.40 = 11,411.64 : x
  2. Step 2: Convert to fraction form
    20,364.06/28,102.40 = 11,411.64/x
  3. Step 3: Cross multiply
    20,364.06x = 28,102.40 × 11,411.64
  4. Step 4: Simplify right side
    20,364.06x = 320,694,471.94
  5. Step 5: Solve for x
    x = 320,694,471.94/20,364.06
  6. Step 6: Final answer
    x = 15,748.06

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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.