Home / 20,806,149.40-31,208,640.90-9,446,579.80

Finding the Fourth Proportional to 20,806,149.40, 31,208,640.90 and 9,446,579.80

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Solution

The fourth proportional to 20,806,149.40, 31,208,640.90 and 9,446,579.80 is: 14,169,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,149.40 : 31,208,640.90 = 9,446,579.80 : x
  2. Step 2: Convert to fraction form
    20,806,149.40/31,208,640.90 = 9,446,579.80/x
  3. Step 3: Cross multiply
    20,806,149.40x = 31,208,640.90 × 9,446,579.80
  4. Step 4: Simplify right side
    20,806,149.40x = 294,814,916,711,393.81
  5. Step 5: Solve for x
    x = 294,814,916,711,393.81/20,806,149.40
  6. Step 6: Final answer
    x = 14,169,604.91

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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.