Home / 21,398.58-29,528.82-11,837.92

Finding the Fourth Proportional to 21,398.58, 29,528.82 and 11,837.92

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Solution

The fourth proportional to 21,398.58, 29,528.82 and 11,837.92 is: 16,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.58 : 29,528.82 = 11,837.92 : x
  2. Step 2: Convert to fraction form
    21,398.58/29,528.82 = 11,837.92/x
  3. Step 3: Cross multiply
    21,398.58x = 29,528.82 × 11,837.92
  4. Step 4: Simplify right side
    21,398.58x = 349,559,808.85
  5. Step 5: Solve for x
    x = 349,559,808.85/21,398.58
  6. Step 6: Final answer
    x = 16,335.65

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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.