Home / 20,218,987.10-30,328,480.65-16,628,807.90

Finding the Fourth Proportional to 20,218,987.10, 30,328,480.65 and 16,628,807.90

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Solution

The fourth proportional to 20,218,987.10, 30,328,480.65 and 16,628,807.90 is: 24,943,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,987.10 : 30,328,480.65 = 16,628,807.90 : x
  2. Step 2: Convert to fraction form
    20,218,987.10/30,328,480.65 = 16,628,807.90/x
  3. Step 3: Cross multiply
    20,218,987.10x = 30,328,480.65 × 16,628,807.90
  4. Step 4: Simplify right side
    20,218,987.10x = 504,326,478,627,717.12
  5. Step 5: Solve for x
    x = 504,326,478,627,717.12/20,218,987.10
  6. Step 6: Final answer
    x = 24,943,211.85

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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.