Home / 20,853.74-31,280.36-8,373.54

Finding the Fourth Proportional to 20,853.74, 31,280.36 and 8,373.54

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Solution

The fourth proportional to 20,853.74, 31,280.36 and 8,373.54 is: 12,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.74 : 31,280.36 = 8,373.54 : x
  2. Step 2: Convert to fraction form
    20,853.74/31,280.36 = 8,373.54/x
  3. Step 3: Cross multiply
    20,853.74x = 31,280.36 × 8,373.54
  4. Step 4: Simplify right side
    20,853.74x = 261,927,345.67
  5. Step 5: Solve for x
    x = 261,927,345.67/20,853.74
  6. Step 6: Final answer
    x = 12,560.21

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1.5x scale

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.