Home / 21,131,063.80-31,696,595.70-19,703,390.20

Finding the Fourth Proportional to 21,131,063.80, 31,696,595.70 and 19,703,390.20

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Solution

The fourth proportional to 21,131,063.80, 31,696,595.70 and 19,703,390.20 is: 29,555,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131,063.80 : 31,696,595.70 = 19,703,390.20 : x
  2. Step 2: Convert to fraction form
    21,131,063.80/31,696,595.70 = 19,703,390.20/x
  3. Step 3: Cross multiply
    21,131,063.80x = 31,696,595.70 × 19,703,390.20
  4. Step 4: Simplify right side
    21,131,063.80x = 624,530,393,088,742.12
  5. Step 5: Solve for x
    x = 624,530,393,088,742.12/21,131,063.80
  6. Step 6: Final answer
    x = 29,555,085.30

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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.