Home / 12,078,400-16,662,699.66-7,180,843.15

Finding the Fourth Proportional to 12,078,400, 16,662,699.66 and 7,180,843.15

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Solution

The fourth proportional to 12,078,400, 16,662,699.66 and 7,180,843.15 is: 9,906,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078,400 : 16,662,699.66 = 7,180,843.15 : x
  2. Step 2: Convert to fraction form
    12,078,400/16,662,699.66 = 7,180,843.15/x
  3. Step 3: Cross multiply
    12,078,400x = 16,662,699.66 × 7,180,843.15
  4. Step 4: Simplify right side
    12,078,400x = 119,652,232,714,018.34
  5. Step 5: Solve for x
    x = 119,652,232,714,018.34/12,078,400
  6. Step 6: Final answer
    x = 9,906,298.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.