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Finding the Fourth Proportional to 18,397,873.70, 27,596,810.55 and 12,658,310.90

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Solution

The fourth proportional to 18,397,873.70, 27,596,810.55 and 12,658,310.90 is: 18,987,466.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397,873.70 : 27,596,810.55 = 12,658,310.90 : x
  2. Step 2: Convert to fraction form
    18,397,873.70/27,596,810.55 = 12,658,310.90/x
  3. Step 3: Cross multiply
    18,397,873.70x = 27,596,810.55 × 12,658,310.90
  4. Step 4: Simplify right side
    18,397,873.70x = 349,329,007,790,300
  5. Step 5: Solve for x
    x = 349,329,007,790,300/18,397,873.70
  6. Step 6: Final answer
    x = 18,987,466.35

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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.