Home / 12,457,831.60-18,686,747.40-7,649,930.80

Finding the Fourth Proportional to 12,457,831.60, 18,686,747.40 and 7,649,930.80

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Solution

The fourth proportional to 12,457,831.60, 18,686,747.40 and 7,649,930.80 is: 11,474,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,831.60 : 18,686,747.40 = 7,649,930.80 : x
  2. Step 2: Convert to fraction form
    12,457,831.60/18,686,747.40 = 7,649,930.80/x
  3. Step 3: Cross multiply
    12,457,831.60x = 18,686,747.40 × 7,649,930.80
  4. Step 4: Simplify right side
    12,457,831.60x = 142,952,324,487,079.91
  5. Step 5: Solve for x
    x = 142,952,324,487,079.91/12,457,831.60
  6. Step 6: Final answer
    x = 11,474,896.20

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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.