Home / 20,548,780.77-28,337,756-12,287,530.43

Finding the Fourth Proportional to 20,548,780.77, 28,337,756 and 12,287,530.43

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Solution

The fourth proportional to 20,548,780.77, 28,337,756 and 12,287,530.43 is: 16,945,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548,780.77 : 28,337,756 = 12,287,530.43 : x
  2. Step 2: Convert to fraction form
    20,548,780.77/28,337,756 = 12,287,530.43/x
  3. Step 3: Cross multiply
    20,548,780.77x = 28,337,756 × 12,287,530.43
  4. Step 4: Simplify right side
    20,548,780.77x = 348,201,039,167,915.06
  5. Step 5: Solve for x
    x = 348,201,039,167,915.06/20,548,780.77
  6. Step 6: Final answer
    x = 16,945,094.85

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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.