Home / 18,684,136.80-28,026,205.20-11,472,285.60

Finding the Fourth Proportional to 18,684,136.80, 28,026,205.20 and 11,472,285.60

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Solution

The fourth proportional to 18,684,136.80, 28,026,205.20 and 11,472,285.60 is: 17,208,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,136.80 : 28,026,205.20 = 11,472,285.60 : x
  2. Step 2: Convert to fraction form
    18,684,136.80/28,026,205.20 = 11,472,285.60/x
  3. Step 3: Cross multiply
    18,684,136.80x = 28,026,205.20 × 11,472,285.60
  4. Step 4: Simplify right side
    18,684,136.80x = 321,524,630,338,605.12
  5. Step 5: Solve for x
    x = 321,524,630,338,605.12/18,684,136.80
  6. Step 6: Final answer
    x = 17,208,428.40

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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.