Home / 21,447.74-32,146.74-12,690.02

Finding the Fourth Proportional to 21,447.74, 32,146.74 and 12,690.02

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Solution

The fourth proportional to 21,447.74, 32,146.74 and 12,690.02 is: 19,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.74 : 32,146.74 = 12,690.02 : x
  2. Step 2: Convert to fraction form
    21,447.74/32,146.74 = 12,690.02/x
  3. Step 3: Cross multiply
    21,447.74x = 32,146.74 × 12,690.02
  4. Step 4: Simplify right side
    21,447.74x = 407,942,773.53
  5. Step 5: Solve for x
    x = 407,942,773.53/21,447.74
  6. Step 6: Final answer
    x = 19,020.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.