Home / 21,374.53-29,497.30-12,422.81

Finding the Fourth Proportional to 21,374.53, 29,497.30 and 12,422.81

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Solution

The fourth proportional to 21,374.53, 29,497.30 and 12,422.81 is: 17,143.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.53 : 29,497.30 = 12,422.81 : x
  2. Step 2: Convert to fraction form
    21,374.53/29,497.30 = 12,422.81/x
  3. Step 3: Cross multiply
    21,374.53x = 29,497.30 × 12,422.81
  4. Step 4: Simplify right side
    21,374.53x = 366,439,396.10
  5. Step 5: Solve for x
    x = 366,439,396.10/21,374.53
  6. Step 6: Final answer
    x = 17,143.74

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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.