Home / 21,450.84-29,602.13-12,019.47

Finding the Fourth Proportional to 21,450.84, 29,602.13 and 12,019.47

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Solution

The fourth proportional to 21,450.84, 29,602.13 and 12,019.47 is: 16,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.84 : 29,602.13 = 12,019.47 : x
  2. Step 2: Convert to fraction form
    21,450.84/29,602.13 = 12,019.47/x
  3. Step 3: Cross multiply
    21,450.84x = 29,602.13 × 12,019.47
  4. Step 4: Simplify right side
    21,450.84x = 355,801,913.47
  5. Step 5: Solve for x
    x = 355,801,913.47/21,450.84
  6. Step 6: Final answer
    x = 16,586.85

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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.