Home / 21,314.07-29,376.68-15,999.66

Finding the Fourth Proportional to 21,314.07, 29,376.68 and 15,999.66

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Solution

The fourth proportional to 21,314.07, 29,376.68 and 15,999.66 is: 22,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.07 : 29,376.68 = 15,999.66 : x
  2. Step 2: Convert to fraction form
    21,314.07/29,376.68 = 15,999.66/x
  3. Step 3: Cross multiply
    21,314.07x = 29,376.68 × 15,999.66
  4. Step 4: Simplify right side
    21,314.07x = 470,016,811.93
  5. Step 5: Solve for x
    x = 470,016,811.93/21,314.07
  6. Step 6: Final answer
    x = 22,051.95

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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.