Home / 21,287.84-29,377.22-12,340.53

Finding the Fourth Proportional to 21,287.84, 29,377.22 and 12,340.53

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Solution

The fourth proportional to 21,287.84, 29,377.22 and 12,340.53 is: 17,029.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.84 : 29,377.22 = 12,340.53 : x
  2. Step 2: Convert to fraction form
    21,287.84/29,377.22 = 12,340.53/x
  3. Step 3: Cross multiply
    21,287.84x = 29,377.22 × 12,340.53
  4. Step 4: Simplify right side
    21,287.84x = 362,530,403.02
  5. Step 5: Solve for x
    x = 362,530,403.02/21,287.84
  6. Step 6: Final answer
    x = 17,029.93

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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.