Home / 18,683,400.90-28,025,101.35-13,900,431.90

Finding the Fourth Proportional to 18,683,400.90, 28,025,101.35 and 13,900,431.90

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Solution

The fourth proportional to 18,683,400.90, 28,025,101.35 and 13,900,431.90 is: 20,850,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,400.90 : 28,025,101.35 = 13,900,431.90 : x
  2. Step 2: Convert to fraction form
    18,683,400.90/28,025,101.35 = 13,900,431.90/x
  3. Step 3: Cross multiply
    18,683,400.90x = 28,025,101.35 × 13,900,431.90
  4. Step 4: Simplify right side
    18,683,400.90x = 389,561,012,806,273.12
  5. Step 5: Solve for x
    x = 389,561,012,806,273.12/18,683,400.90
  6. Step 6: Final answer
    x = 20,850,647.85

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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.