Home / 20,335.66-28,060.26-11,381.51

Finding the Fourth Proportional to 20,335.66, 28,060.26 and 11,381.51

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Solution

The fourth proportional to 20,335.66, 28,060.26 and 11,381.51 is: 15,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.66 : 28,060.26 = 11,381.51 : x
  2. Step 2: Convert to fraction form
    20,335.66/28,060.26 = 11,381.51/x
  3. Step 3: Cross multiply
    20,335.66x = 28,060.26 × 11,381.51
  4. Step 4: Simplify right side
    20,335.66x = 319,368,199.94
  5. Step 5: Solve for x
    x = 319,368,199.94/20,335.66
  6. Step 6: Final answer
    x = 15,704.84

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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.