Home / 12,121,257.80-18,181,886.70-9,433,872.20

Finding the Fourth Proportional to 12,121,257.80, 18,181,886.70 and 9,433,872.20

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Solution

The fourth proportional to 12,121,257.80, 18,181,886.70 and 9,433,872.20 is: 14,150,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,257.80 : 18,181,886.70 = 9,433,872.20 : x
  2. Step 2: Convert to fraction form
    12,121,257.80/18,181,886.70 = 9,433,872.20/x
  3. Step 3: Cross multiply
    12,121,257.80x = 18,181,886.70 × 9,433,872.20
  4. Step 4: Simplify right side
    12,121,257.80x = 171,525,595,482,679.72
  5. Step 5: Solve for x
    x = 171,525,595,482,679.72/12,121,257.80
  6. Step 6: Final answer
    x = 14,150,808.30

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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.