Home / 21,920.96-30,252.47-12,361.70

Finding the Fourth Proportional to 21,920.96, 30,252.47 and 12,361.70

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Solution

The fourth proportional to 21,920.96, 30,252.47 and 12,361.70 is: 17,060.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.96 : 30,252.47 = 12,361.70 : x
  2. Step 2: Convert to fraction form
    21,920.96/30,252.47 = 12,361.70/x
  3. Step 3: Cross multiply
    21,920.96x = 30,252.47 × 12,361.70
  4. Step 4: Simplify right side
    21,920.96x = 373,971,972.22
  5. Step 5: Solve for x
    x = 373,971,972.22/21,920.96
  6. Step 6: Final answer
    x = 17,060.02

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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.