Home / 20,743.09-31,114.60-5,160.71

Finding the Fourth Proportional to 20,743.09, 31,114.60 and 5,160.71

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Solution

The fourth proportional to 20,743.09, 31,114.60 and 5,160.71 is: 7,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.09 : 31,114.60 = 5,160.71 : x
  2. Step 2: Convert to fraction form
    20,743.09/31,114.60 = 5,160.71/x
  3. Step 3: Cross multiply
    20,743.09x = 31,114.60 × 5,160.71
  4. Step 4: Simplify right side
    20,743.09x = 160,573,492.25
  5. Step 5: Solve for x
    x = 160,573,492.25/20,743.09
  6. Step 6: Final answer
    x = 7,741.06

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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.