Home / 20,783,380.50-28,680,569.48-11,616,876.18

Finding the Fourth Proportional to 20,783,380.50, 28,680,569.48 and 11,616,876.18

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Solution

The fourth proportional to 20,783,380.50, 28,680,569.48 and 11,616,876.18 is: 16,031,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,380.50 : 28,680,569.48 = 11,616,876.18 : x
  2. Step 2: Convert to fraction form
    20,783,380.50/28,680,569.48 = 11,616,876.18/x
  3. Step 3: Cross multiply
    20,783,380.50x = 28,680,569.48 × 11,616,876.18
  4. Step 4: Simplify right side
    20,783,380.50x = 333,178,624,421,047
  5. Step 5: Solve for x
    x = 333,178,624,421,047/20,783,380.50
  6. Step 6: Final answer
    x = 16,031,012.11

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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.