Home / 20,747.48-31,114.01-12,837.89

Finding the Fourth Proportional to 20,747.48, 31,114.01 and 12,837.89

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Solution

The fourth proportional to 20,747.48, 31,114.01 and 12,837.89 is: 19,252.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.48 : 31,114.01 = 12,837.89 : x
  2. Step 2: Convert to fraction form
    20,747.48/31,114.01 = 12,837.89/x
  3. Step 3: Cross multiply
    20,747.48x = 31,114.01 × 12,837.89
  4. Step 4: Simplify right side
    20,747.48x = 399,438,275.51
  5. Step 5: Solve for x
    x = 399,438,275.51/20,747.48
  6. Step 6: Final answer
    x = 19,252.38

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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.