Home / 12,290,431.20-18,435,646.80-5,913,139.20

Finding the Fourth Proportional to 12,290,431.20, 18,435,646.80 and 5,913,139.20

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Solution

The fourth proportional to 12,290,431.20, 18,435,646.80 and 5,913,139.20 is: 8,869,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,431.20 : 18,435,646.80 = 5,913,139.20 : x
  2. Step 2: Convert to fraction form
    12,290,431.20/18,435,646.80 = 5,913,139.20/x
  3. Step 3: Cross multiply
    12,290,431.20x = 18,435,646.80 × 5,913,139.20
  4. Step 4: Simplify right side
    12,290,431.20x = 109,012,545,770,434.56
  5. Step 5: Solve for x
    x = 109,012,545,770,434.56/12,290,431.20
  6. Step 6: Final answer
    x = 8,869,708.80

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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.