Home / 18,981,069.85-28,517,026.47-12,170,985.53

Finding the Fourth Proportional to 18,981,069.85, 28,517,026.47 and 12,170,985.53

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Solution

The fourth proportional to 18,981,069.85, 28,517,026.47 and 12,170,985.53 is: 18,285,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,069.85 : 28,517,026.47 = 12,170,985.53 : x
  2. Step 2: Convert to fraction form
    18,981,069.85/28,517,026.47 = 12,170,985.53/x
  3. Step 3: Cross multiply
    18,981,069.85x = 28,517,026.47 × 12,170,985.53
  4. Step 4: Simplify right side
    18,981,069.85x = 347,080,316,464,142
  5. Step 5: Solve for x
    x = 347,080,316,464,142/18,981,069.85
  6. Step 6: Final answer
    x = 18,285,603.46

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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.