Home / 18,722,963.80-28,084,445.70-12,345,671.80

Finding the Fourth Proportional to 18,722,963.80, 28,084,445.70 and 12,345,671.80

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Solution

The fourth proportional to 18,722,963.80, 28,084,445.70 and 12,345,671.80 is: 18,518,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,963.80 : 28,084,445.70 = 12,345,671.80 : x
  2. Step 2: Convert to fraction form
    18,722,963.80/28,084,445.70 = 12,345,671.80/x
  3. Step 3: Cross multiply
    18,722,963.80x = 28,084,445.70 × 12,345,671.80
  4. Step 4: Simplify right side
    18,722,963.80x = 346,721,349,297,121.25
  5. Step 5: Solve for x
    x = 346,721,349,297,121.25/18,722,963.80
  6. Step 6: Final answer
    x = 18,518,507.70

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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.