Home / 20,966.56-31,437.78-12,541.48

Finding the Fourth Proportional to 20,966.56, 31,437.78 and 12,541.48

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Solution

The fourth proportional to 20,966.56, 31,437.78 and 12,541.48 is: 18,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.56 : 31,437.78 = 12,541.48 : x
  2. Step 2: Convert to fraction form
    20,966.56/31,437.78 = 12,541.48/x
  3. Step 3: Cross multiply
    20,966.56x = 31,437.78 × 12,541.48
  4. Step 4: Simplify right side
    20,966.56x = 394,276,289.11
  5. Step 5: Solve for x
    x = 394,276,289.11/20,966.56
  6. Step 6: Final answer
    x = 18,805.01

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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.