Home / 20,899,385.57-28,850,803.96-12,530,715.63

Finding the Fourth Proportional to 20,899,385.57, 28,850,803.96 and 12,530,715.63

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Solution

The fourth proportional to 20,899,385.57, 28,850,803.96 and 12,530,715.63 is: 17,298,174.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899,385.57 : 28,850,803.96 = 12,530,715.63 : x
  2. Step 2: Convert to fraction form
    20,899,385.57/28,850,803.96 = 12,530,715.63/x
  3. Step 3: Cross multiply
    20,899,385.57x = 28,850,803.96 × 12,530,715.63
  4. Step 4: Simplify right side
    20,899,385.57x = 361,521,220,201,817.31
  5. Step 5: Solve for x
    x = 361,521,220,201,817.31/20,899,385.57
  6. Step 6: Final answer
    x = 17,298,174.58

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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.