Home / 12,153,872.80-18,230,809.20-3,178,424.80

Finding the Fourth Proportional to 12,153,872.80, 18,230,809.20 and 3,178,424.80

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Solution

The fourth proportional to 12,153,872.80, 18,230,809.20 and 3,178,424.80 is: 4,767,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153,872.80 : 18,230,809.20 = 3,178,424.80 : x
  2. Step 2: Convert to fraction form
    12,153,872.80/18,230,809.20 = 3,178,424.80/x
  3. Step 3: Cross multiply
    12,153,872.80x = 18,230,809.20 × 3,178,424.80
  4. Step 4: Simplify right side
    12,153,872.80x = 57,945,256,085,348.16
  5. Step 5: Solve for x
    x = 57,945,256,085,348.16/12,153,872.80
  6. Step 6: Final answer
    x = 4,767,637.20

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Similar ratio
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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.