Home / 18,722,345.70-28,021,310.55-13,590,185.70

Finding the Fourth Proportional to 18,722,345.70, 28,021,310.55 and 13,590,185.70

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Solution

The fourth proportional to 18,722,345.70, 28,021,310.55 and 13,590,185.70 is: 20,340,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,345.70 : 28,021,310.55 = 13,590,185.70 : x
  2. Step 2: Convert to fraction form
    18,722,345.70/28,021,310.55 = 13,590,185.70/x
  3. Step 3: Cross multiply
    18,722,345.70x = 28,021,310.55 × 13,590,185.70
  4. Step 4: Simplify right side
    18,722,345.70x = 380,814,813,931,869.12
  5. Step 5: Solve for x
    x = 380,814,813,931,869.12/18,722,345.70
  6. Step 6: Final answer
    x = 20,340,122.98

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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.