Home / 21,398.99-29,538.54-16,109.15

Finding the Fourth Proportional to 21,398.99, 29,538.54 and 16,109.15

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Solution

The fourth proportional to 21,398.99, 29,538.54 and 16,109.15 is: 22,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.99 : 29,538.54 = 16,109.15 : x
  2. Step 2: Convert to fraction form
    21,398.99/29,538.54 = 16,109.15/x
  3. Step 3: Cross multiply
    21,398.99x = 29,538.54 × 16,109.15
  4. Step 4: Simplify right side
    21,398.99x = 475,840,623.95
  5. Step 5: Solve for x
    x = 475,840,623.95/21,398.99
  6. Step 6: Final answer
    x = 22,236.60

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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.