Home / 53,143.79-79,720.27-13,700.57

Finding the Fourth Proportional to 53,143.79, 79,720.27 and 13,700.57

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Solution

The fourth proportional to 53,143.79, 79,720.27 and 13,700.57 is: 20,552.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,143.79 : 79,720.27 = 13,700.57 : x
  2. Step 2: Convert to fraction form
    53,143.79/79,720.27 = 13,700.57/x
  3. Step 3: Cross multiply
    53,143.79x = 79,720.27 × 13,700.57
  4. Step 4: Simplify right side
    53,143.79x = 1,092,212,832.04
  5. Step 5: Solve for x
    x = 1,092,212,832.04/53,143.79
  6. Step 6: Final answer
    x = 20,552.03

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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.