Home / 20,985,292.98-28,959,819.19-12,169,970.87

Finding the Fourth Proportional to 20,985,292.98, 28,959,819.19 and 12,169,970.87

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Solution

The fourth proportional to 20,985,292.98, 28,959,819.19 and 12,169,970.87 is: 16,794,626.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,292.98 : 28,959,819.19 = 12,169,970.87 : x
  2. Step 2: Convert to fraction form
    20,985,292.98/28,959,819.19 = 12,169,970.87/x
  3. Step 3: Cross multiply
    20,985,292.98x = 28,959,819.19 × 12,169,970.87
  4. Step 4: Simplify right side
    20,985,292.98x = 352,440,155,881,917.12
  5. Step 5: Solve for x
    x = 352,440,155,881,917.12/20,985,292.98
  6. Step 6: Final answer
    x = 16,794,626.42

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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.