Home / 20,971.73-28,945.13-12,025.28

Finding the Fourth Proportional to 20,971.73, 28,945.13 and 12,025.28

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Solution

The fourth proportional to 20,971.73, 28,945.13 and 12,025.28 is: 16,597.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.73 : 28,945.13 = 12,025.28 : x
  2. Step 2: Convert to fraction form
    20,971.73/28,945.13 = 12,025.28/x
  3. Step 3: Cross multiply
    20,971.73x = 28,945.13 × 12,025.28
  4. Step 4: Simplify right side
    20,971.73x = 348,073,088.03
  5. Step 5: Solve for x
    x = 348,073,088.03/20,971.73
  6. Step 6: Final answer
    x = 16,597.26

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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.