Home / 20,218,989.60-30,328,484.40-18,203,450.40

Finding the Fourth Proportional to 20,218,989.60, 30,328,484.40 and 18,203,450.40

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Solution

The fourth proportional to 20,218,989.60, 30,328,484.40 and 18,203,450.40 is: 27,305,175.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,989.60 : 30,328,484.40 = 18,203,450.40 : x
  2. Step 2: Convert to fraction form
    20,218,989.60/30,328,484.40 = 18,203,450.40/x
  3. Step 3: Cross multiply
    20,218,989.60x = 30,328,484.40 × 18,203,450.40
  4. Step 4: Simplify right side
    20,218,989.60x = 552,083,061,482,573.69
  5. Step 5: Solve for x
    x = 552,083,061,482,573.69/20,218,989.60
  6. Step 6: Final answer
    x = 27,305,175.60

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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.