Home / 20,712,655.43-28,583,657.98-11,420,558.75

Finding the Fourth Proportional to 20,712,655.43, 28,583,657.98 and 11,420,558.75

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Solution

The fourth proportional to 20,712,655.43, 28,583,657.98 and 11,420,558.75 is: 15,760,477.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,655.43 : 28,583,657.98 = 11,420,558.75 : x
  2. Step 2: Convert to fraction form
    20,712,655.43/28,583,657.98 = 11,420,558.75/x
  3. Step 3: Cross multiply
    20,712,655.43x = 28,583,657.98 × 11,420,558.75
  4. Step 4: Simplify right side
    20,712,655.43x = 326,441,345,325,816.12
  5. Step 5: Solve for x
    x = 326,441,345,325,816.12/20,712,655.43
  6. Step 6: Final answer
    x = 15,760,477.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.