Home / 18,403,843.20-27,605,764.80-12,664,280.40

Finding the Fourth Proportional to 18,403,843.20, 27,605,764.80 and 12,664,280.40

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Solution

The fourth proportional to 18,403,843.20, 27,605,764.80 and 12,664,280.40 is: 18,996,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403,843.20 : 27,605,764.80 = 12,664,280.40 : x
  2. Step 2: Convert to fraction form
    18,403,843.20/27,605,764.80 = 12,664,280.40/x
  3. Step 3: Cross multiply
    18,403,843.20x = 27,605,764.80 × 12,664,280.40
  4. Step 4: Simplify right side
    18,403,843.20x = 349,607,146,083,649.94
  5. Step 5: Solve for x
    x = 349,607,146,083,649.94/18,403,843.20
  6. Step 6: Final answer
    x = 18,996,420.60

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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.