Home / 20,945.56-28,901.65-12,444.54

Finding the Fourth Proportional to 20,945.56, 28,901.65 and 12,444.54

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Solution

The fourth proportional to 20,945.56, 28,901.65 and 12,444.54 is: 17,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.56 : 28,901.65 = 12,444.54 : x
  2. Step 2: Convert to fraction form
    20,945.56/28,901.65 = 12,444.54/x
  3. Step 3: Cross multiply
    20,945.56x = 28,901.65 × 12,444.54
  4. Step 4: Simplify right side
    20,945.56x = 359,667,605.83
  5. Step 5: Solve for x
    x = 359,667,605.83/20,945.56
  6. Step 6: Final answer
    x = 17,171.54

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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.