Home / 53,321.08-79,981.37-13,878.13

Finding the Fourth Proportional to 53,321.08, 79,981.37 and 13,878.13

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Solution

The fourth proportional to 53,321.08, 79,981.37 and 13,878.13 is: 20,817.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,321.08 : 79,981.37 = 13,878.13 : x
  2. Step 2: Convert to fraction form
    53,321.08/79,981.37 = 13,878.13/x
  3. Step 3: Cross multiply
    53,321.08x = 79,981.37 × 13,878.13
  4. Step 4: Simplify right side
    53,321.08x = 1,109,991,781.05
  5. Step 5: Solve for x
    x = 1,109,991,781.05/53,321.08
  6. Step 6: Final answer
    x = 20,817.13

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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.