Home / 21,302.58-29,398.05-11,871.72

Finding the Fourth Proportional to 21,302.58, 29,398.05 and 11,871.72

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Solution

The fourth proportional to 21,302.58, 29,398.05 and 11,871.72 is: 16,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.58 : 29,398.05 = 11,871.72 : x
  2. Step 2: Convert to fraction form
    21,302.58/29,398.05 = 11,871.72/x
  3. Step 3: Cross multiply
    21,302.58x = 29,398.05 × 11,871.72
  4. Step 4: Simplify right side
    21,302.58x = 349,005,418.15
  5. Step 5: Solve for x
    x = 349,005,418.15/21,302.58
  6. Step 6: Final answer
    x = 16,383.25

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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.