Home / 21,902.84-30,225.96-12,954.77

Finding the Fourth Proportional to 21,902.84, 30,225.96 and 12,954.77

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Solution

The fourth proportional to 21,902.84, 30,225.96 and 12,954.77 is: 17,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.84 : 30,225.96 = 12,954.77 : x
  2. Step 2: Convert to fraction form
    21,902.84/30,225.96 = 12,954.77/x
  3. Step 3: Cross multiply
    21,902.84x = 30,225.96 × 12,954.77
  4. Step 4: Simplify right side
    21,902.84x = 391,570,359.83
  5. Step 5: Solve for x
    x = 391,570,359.83/21,902.84
  6. Step 6: Final answer
    x = 17,877.61

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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.