Home / 53,215.67-79,825.20-19,929.41

Finding the Fourth Proportional to 53,215.67, 79,825.20 and 19,929.41

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Solution

The fourth proportional to 53,215.67, 79,825.20 and 19,929.41 is: 29,894.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,215.67 : 79,825.20 = 19,929.41 : x
  2. Step 2: Convert to fraction form
    53,215.67/79,825.20 = 19,929.41/x
  3. Step 3: Cross multiply
    53,215.67x = 79,825.20 × 19,929.41
  4. Step 4: Simplify right side
    53,215.67x = 1,590,869,139.13
  5. Step 5: Solve for x
    x = 1,590,869,139.13/53,215.67
  6. Step 6: Final answer
    x = 29,894.75

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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.