Home / 23,063.87-31,822.65-12,990.30

Finding the Fourth Proportional to 23,063.87, 31,822.65 and 12,990.30

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Solution

The fourth proportional to 23,063.87, 31,822.65 and 12,990.30 is: 17,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,063.87 : 31,822.65 = 12,990.30 : x
  2. Step 2: Convert to fraction form
    23,063.87/31,822.65 = 12,990.30/x
  3. Step 3: Cross multiply
    23,063.87x = 31,822.65 × 12,990.30
  4. Step 4: Simplify right side
    23,063.87x = 413,385,770.30
  5. Step 5: Solve for x
    x = 413,385,770.30/23,063.87
  6. Step 6: Final answer
    x = 17,923.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.