Home / 20,948.15-31,385.32-11,065.66

Finding the Fourth Proportional to 20,948.15, 31,385.32 and 11,065.66

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Solution

The fourth proportional to 20,948.15, 31,385.32 and 11,065.66 is: 16,579.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.15 : 31,385.32 = 11,065.66 : x
  2. Step 2: Convert to fraction form
    20,948.15/31,385.32 = 11,065.66/x
  3. Step 3: Cross multiply
    20,948.15x = 31,385.32 × 11,065.66
  4. Step 4: Simplify right side
    20,948.15x = 347,299,280.11
  5. Step 5: Solve for x
    x = 347,299,280.11/20,948.15
  6. Step 6: Final answer
    x = 16,579.00

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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.