Home / 53,161.26-79,742.23-13,718.71

Finding the Fourth Proportional to 53,161.26, 79,742.23 and 13,718.71

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Solution

The fourth proportional to 53,161.26, 79,742.23 and 13,718.71 is: 20,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,161.26 : 79,742.23 = 13,718.71 : x
  2. Step 2: Convert to fraction form
    53,161.26/79,742.23 = 13,718.71/x
  3. Step 3: Cross multiply
    53,161.26x = 79,742.23 × 13,718.71
  4. Step 4: Simplify right side
    53,161.26x = 1,093,960,528.12
  5. Step 5: Solve for x
    x = 1,093,960,528.12/53,161.26
  6. Step 6: Final answer
    x = 20,578.15

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1.5x scale

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.