Home / 12,630,898.20-18,918,353.70-9,781,771.80

Finding the Fourth Proportional to 12,630,898.20, 18,918,353.70 and 9,781,771.80

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Solution

The fourth proportional to 12,630,898.20, 18,918,353.70 and 9,781,771.80 is: 14,650,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630,898.20 : 18,918,353.70 = 9,781,771.80 : x
  2. Step 2: Convert to fraction form
    12,630,898.20/18,918,353.70 = 9,781,771.80/x
  3. Step 3: Cross multiply
    12,630,898.20x = 18,918,353.70 × 9,781,771.80
  4. Step 4: Simplify right side
    12,630,898.20x = 185,055,018,725,085.66
  5. Step 5: Solve for x
    x = 185,055,018,725,085.66/12,630,898.20
  6. Step 6: Final answer
    x = 14,650,978.56

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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.