Home / 21,157.70-31,741.82-14,929.88

Finding the Fourth Proportional to 21,157.70, 31,741.82 and 14,929.88

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Solution

The fourth proportional to 21,157.70, 31,741.82 and 14,929.88 is: 22,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.70 : 31,741.82 = 14,929.88 : x
  2. Step 2: Convert to fraction form
    21,157.70/31,741.82 = 14,929.88/x
  3. Step 3: Cross multiply
    21,157.70x = 31,741.82 × 14,929.88
  4. Step 4: Simplify right side
    21,157.70x = 473,901,330.22
  5. Step 5: Solve for x
    x = 473,901,330.22/21,157.70
  6. Step 6: Final answer
    x = 22,398.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.