Home / 12,100,216.80-18,171,320.40-6,431,512.80

Finding the Fourth Proportional to 12,100,216.80, 18,171,320.40 and 6,431,512.80

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Solution

The fourth proportional to 12,100,216.80, 18,171,320.40 and 6,431,512.80 is: 9,658,428.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100,216.80 : 18,171,320.40 = 6,431,512.80 : x
  2. Step 2: Convert to fraction form
    12,100,216.80/18,171,320.40 = 6,431,512.80/x
  3. Step 3: Cross multiply
    12,100,216.80x = 18,171,320.40 × 6,431,512.80
  4. Step 4: Simplify right side
    12,100,216.80x = 116,869,079,745,501.11
  5. Step 5: Solve for x
    x = 116,869,079,745,501.11/12,100,216.80
  6. Step 6: Final answer
    x = 9,658,428.58

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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.