Home / 31,790.73-43,874.71-20,316.22

Finding the Fourth Proportional to 31,790.73, 43,874.71 and 20,316.22

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Solution

The fourth proportional to 31,790.73, 43,874.71 and 20,316.22 is: 28,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.73 : 43,874.71 = 20,316.22 : x
  2. Step 2: Convert to fraction form
    31,790.73/43,874.71 = 20,316.22/x
  3. Step 3: Cross multiply
    31,790.73x = 43,874.71 × 20,316.22
  4. Step 4: Simplify right side
    31,790.73x = 891,368,214.60
  5. Step 5: Solve for x
    x = 891,368,214.60/31,790.73
  6. Step 6: Final answer
    x = 28,038.62

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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.