Home / 21,294,518.80-31,941,778.20-13,216,615.60

Finding the Fourth Proportional to 21,294,518.80, 31,941,778.20 and 13,216,615.60

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Solution

The fourth proportional to 21,294,518.80, 31,941,778.20 and 13,216,615.60 is: 19,824,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,518.80 : 31,941,778.20 = 13,216,615.60 : x
  2. Step 2: Convert to fraction form
    21,294,518.80/31,941,778.20 = 13,216,615.60/x
  3. Step 3: Cross multiply
    21,294,518.80x = 31,941,778.20 × 13,216,615.60
  4. Step 4: Simplify right side
    21,294,518.80x = 422,162,204,049,859.88
  5. Step 5: Solve for x
    x = 422,162,204,049,859.88/21,294,518.80
  6. Step 6: Final answer
    x = 19,824,923.40

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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.