Home / 21,562.28-29,755.89-12,130.84

Finding the Fourth Proportional to 21,562.28, 29,755.89 and 12,130.84

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Solution

The fourth proportional to 21,562.28, 29,755.89 and 12,130.84 is: 16,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.28 : 29,755.89 = 12,130.84 : x
  2. Step 2: Convert to fraction form
    21,562.28/29,755.89 = 12,130.84/x
  3. Step 3: Cross multiply
    21,562.28x = 29,755.89 × 12,130.84
  4. Step 4: Simplify right side
    21,562.28x = 360,963,940.65
  5. Step 5: Solve for x
    x = 360,963,940.65/21,562.28
  6. Step 6: Final answer
    x = 16,740.53

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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.