Home / 21,080.46-29,051.04-15,101.76

Finding the Fourth Proportional to 21,080.46, 29,051.04 and 15,101.76

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Solution

The fourth proportional to 21,080.46, 29,051.04 and 15,101.76 is: 20,811.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.46 : 29,051.04 = 15,101.76 : x
  2. Step 2: Convert to fraction form
    21,080.46/29,051.04 = 15,101.76/x
  3. Step 3: Cross multiply
    21,080.46x = 29,051.04 × 15,101.76
  4. Step 4: Simplify right side
    21,080.46x = 438,721,833.83
  5. Step 5: Solve for x
    x = 438,721,833.83/21,080.46
  6. Step 6: Final answer
    x = 20,811.78

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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.