Home / 20,447,739.53-28,217,959.77-11,155,518.25

Finding the Fourth Proportional to 20,447,739.53, 28,217,959.77 and 11,155,518.25

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Solution

The fourth proportional to 20,447,739.53, 28,217,959.77 and 11,155,518.25 is: 15,394,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447,739.53 : 28,217,959.77 = 11,155,518.25 : x
  2. Step 2: Convert to fraction form
    20,447,739.53/28,217,959.77 = 11,155,518.25/x
  3. Step 3: Cross multiply
    20,447,739.53x = 28,217,959.77 × 11,155,518.25
  4. Step 4: Simplify right side
    20,447,739.53x = 314,785,965,163,289.12
  5. Step 5: Solve for x
    x = 314,785,965,163,289.12/20,447,739.53
  6. Step 6: Final answer
    x = 15,394,658.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.