Home / 53,813.11-80,720.15-18,752.71

Finding the Fourth Proportional to 53,813.11, 80,720.15 and 18,752.71

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Solution

The fourth proportional to 53,813.11, 80,720.15 and 18,752.71 is: 28,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,813.11 : 80,720.15 = 18,752.71 : x
  2. Step 2: Convert to fraction form
    53,813.11/80,720.15 = 18,752.71/x
  3. Step 3: Cross multiply
    53,813.11x = 80,720.15 × 18,752.71
  4. Step 4: Simplify right side
    53,813.11x = 1,513,721,564.11
  5. Step 5: Solve for x
    x = 1,513,721,564.11/53,813.11
  6. Step 6: Final answer
    x = 28,129.23

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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.