Home / 21,214.90-29,278.02-11,783.26

Finding the Fourth Proportional to 21,214.90, 29,278.02 and 11,783.26

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Solution

The fourth proportional to 21,214.90, 29,278.02 and 11,783.26 is: 16,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.90 : 29,278.02 = 11,783.26 : x
  2. Step 2: Convert to fraction form
    21,214.90/29,278.02 = 11,783.26/x
  3. Step 3: Cross multiply
    21,214.90x = 29,278.02 × 11,783.26
  4. Step 4: Simplify right side
    21,214.90x = 344,990,521.95
  5. Step 5: Solve for x
    x = 344,990,521.95/21,214.90
  6. Step 6: Final answer
    x = 16,261.71

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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.