Home / 39,805.74-59,709.54-13,143.12

Finding the Fourth Proportional to 39,805.74, 59,709.54 and 13,143.12

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Solution

The fourth proportional to 39,805.74, 59,709.54 and 13,143.12 is: 19,714.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.74 : 59,709.54 = 13,143.12 : x
  2. Step 2: Convert to fraction form
    39,805.74/59,709.54 = 13,143.12/x
  3. Step 3: Cross multiply
    39,805.74x = 59,709.54 × 13,143.12
  4. Step 4: Simplify right side
    39,805.74x = 784,769,649.36
  5. Step 5: Solve for x
    x = 784,769,649.36/39,805.74
  6. Step 6: Final answer
    x = 19,714.99

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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.