Home / 20,845.95-31,274.76-8,374.74

Finding the Fourth Proportional to 20,845.95, 31,274.76 and 8,374.74

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Solution

The fourth proportional to 20,845.95, 31,274.76 and 8,374.74 is: 12,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.95 : 31,274.76 = 8,374.74 : x
  2. Step 2: Convert to fraction form
    20,845.95/31,274.76 = 8,374.74/x
  3. Step 3: Cross multiply
    20,845.95x = 31,274.76 × 8,374.74
  4. Step 4: Simplify right side
    20,845.95x = 261,917,983.56
  5. Step 5: Solve for x
    x = 261,917,983.56/20,845.95
  6. Step 6: Final answer
    x = 12,564.45

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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.