Home / 21,122,831.70-31,704,681.42-10,200,676.68

Finding the Fourth Proportional to 21,122,831.70, 31,704,681.42 and 10,200,676.68

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Solution

The fourth proportional to 21,122,831.70, 31,704,681.42 and 10,200,676.68 is: 15,310,882.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122,831.70 : 31,704,681.42 = 10,200,676.68 : x
  2. Step 2: Convert to fraction form
    21,122,831.70/31,704,681.42 = 10,200,676.68/x
  3. Step 3: Cross multiply
    21,122,831.70x = 31,704,681.42 × 10,200,676.68
  4. Step 4: Simplify right side
    21,122,831.70x = 323,409,204,407,823.31
  5. Step 5: Solve for x
    x = 323,409,204,407,823.31/21,122,831.70
  6. Step 6: Final answer
    x = 15,310,882.98

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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.