Home / 21,203,280.40-31,809,904.80-6,825,811

Finding the Fourth Proportional to 21,203,280.40, 31,809,904.80 and 6,825,811

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Solution

The fourth proportional to 21,203,280.40, 31,809,904.80 and 6,825,811 is: 10,240,321.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203,280.40 : 31,809,904.80 = 6,825,811 : x
  2. Step 2: Convert to fraction form
    21,203,280.40/31,809,904.80 = 6,825,811/x
  3. Step 3: Cross multiply
    21,203,280.40x = 31,809,904.80 × 6,825,811
  4. Step 4: Simplify right side
    21,203,280.40x = 217,128,398,092,792.81
  5. Step 5: Solve for x
    x = 217,128,398,092,792.81/21,203,280.40
  6. Step 6: Final answer
    x = 10,240,321.03

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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.