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Finding the Fourth Proportional to 18,630,009.80, 27,945,014.70 and 5,851,806.20

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Solution

The fourth proportional to 18,630,009.80, 27,945,014.70 and 5,851,806.20 is: 8,777,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630,009.80 : 27,945,014.70 = 5,851,806.20 : x
  2. Step 2: Convert to fraction form
    18,630,009.80/27,945,014.70 = 5,851,806.20/x
  3. Step 3: Cross multiply
    18,630,009.80x = 27,945,014.70 × 5,851,806.20
  4. Step 4: Simplify right side
    18,630,009.80x = 163,528,810,280,551.16
  5. Step 5: Solve for x
    x = 163,528,810,280,551.16/18,630,009.80
  6. Step 6: Final answer
    x = 8,777,709.30

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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.