Home / 12,219,612.09-18,329,417.46-3,121,729.49

Finding the Fourth Proportional to 12,219,612.09, 18,329,417.46 and 3,121,729.49

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Solution

The fourth proportional to 12,219,612.09, 18,329,417.46 and 3,121,729.49 is: 4,682,594.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219,612.09 : 18,329,417.46 = 3,121,729.49 : x
  2. Step 2: Convert to fraction form
    12,219,612.09/18,329,417.46 = 3,121,729.49/x
  3. Step 3: Cross multiply
    12,219,612.09x = 18,329,417.46 × 3,121,729.49
  4. Step 4: Simplify right side
    12,219,612.09x = 57,219,482,927,755.80
  5. Step 5: Solve for x
    x = 57,219,482,927,755.80/12,219,612.09
  6. Step 6: Final answer
    x = 4,682,594.06

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Double scale
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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.