Home / 12,630,897.70-18,918,352.95-9,781,771.30

Finding the Fourth Proportional to 12,630,897.70, 18,918,352.95 and 9,781,771.30

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Solution

The fourth proportional to 12,630,897.70, 18,918,352.95 and 9,781,771.30 is: 14,650,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630,897.70 : 18,918,352.95 = 9,781,771.30 : x
  2. Step 2: Convert to fraction form
    12,630,897.70/18,918,352.95 = 9,781,771.30/x
  3. Step 3: Cross multiply
    12,630,897.70x = 18,918,352.95 × 9,781,771.30
  4. Step 4: Simplify right side
    12,630,897.70x = 185,055,001,929,580.34
  5. Step 5: Solve for x
    x = 185,055,001,929,580.34/12,630,897.70
  6. Step 6: Final answer
    x = 14,650,977.81

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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.