Home / 12,359,939.60-18,539,909.40-11,856,054.80

Finding the Fourth Proportional to 12,359,939.60, 18,539,909.40 and 11,856,054.80

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Solution

The fourth proportional to 12,359,939.60, 18,539,909.40 and 11,856,054.80 is: 17,784,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359,939.60 : 18,539,909.40 = 11,856,054.80 : x
  2. Step 2: Convert to fraction form
    12,359,939.60/18,539,909.40 = 11,856,054.80/x
  3. Step 3: Cross multiply
    12,359,939.60x = 18,539,909.40 × 11,856,054.80
  4. Step 4: Simplify right side
    12,359,939.60x = 219,810,181,833,435.12
  5. Step 5: Solve for x
    x = 219,810,181,833,435.12/12,359,939.60
  6. Step 6: Final answer
    x = 17,784,082.20

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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.