Home / 20,317.92-28,038.60-11,365.38

Finding the Fourth Proportional to 20,317.92, 28,038.60 and 11,365.38

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Solution

The fourth proportional to 20,317.92, 28,038.60 and 11,365.38 is: 15,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.92 : 28,038.60 = 11,365.38 : x
  2. Step 2: Convert to fraction form
    20,317.92/28,038.60 = 11,365.38/x
  3. Step 3: Cross multiply
    20,317.92x = 28,038.60 × 11,365.38
  4. Step 4: Simplify right side
    20,317.92x = 318,669,343.67
  5. Step 5: Solve for x
    x = 318,669,343.67/20,317.92
  6. Step 6: Final answer
    x = 15,684.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.