Home / 20,722.76-31,084.31-12,848.19

Finding the Fourth Proportional to 20,722.76, 31,084.31 and 12,848.19

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Solution

The fourth proportional to 20,722.76, 31,084.31 and 12,848.19 is: 19,272.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.76 : 31,084.31 = 12,848.19 : x
  2. Step 2: Convert to fraction form
    20,722.76/31,084.31 = 12,848.19/x
  3. Step 3: Cross multiply
    20,722.76x = 31,084.31 × 12,848.19
  4. Step 4: Simplify right side
    20,722.76x = 399,377,056.66
  5. Step 5: Solve for x
    x = 399,377,056.66/20,722.76
  6. Step 6: Final answer
    x = 19,272.39

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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.