Home / 20,901.00-31,360.78-8,445.35

Finding the Fourth Proportional to 20,901.00, 31,360.78 and 8,445.35

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Solution

The fourth proportional to 20,901.00, 31,360.78 and 8,445.35 is: 12,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.00 : 31,360.78 = 8,445.35 : x
  2. Step 2: Convert to fraction form
    20,901.00/31,360.78 = 8,445.35/x
  3. Step 3: Cross multiply
    20,901.00x = 31,360.78 × 8,445.35
  4. Step 4: Simplify right side
    20,901.00x = 264,852,820.11
  5. Step 5: Solve for x
    x = 264,852,820.11/20,901.00
  6. Step 6: Final answer
    x = 12,671.78

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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.