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Finding the Fourth Proportional to 18,699,749.20, 28,026,004.20 and 9,094,445.20

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Solution

The fourth proportional to 18,699,749.20, 28,026,004.20 and 9,094,445.20 is: 13,630,180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699,749.20 : 28,026,004.20 = 9,094,445.20 : x
  2. Step 2: Convert to fraction form
    18,699,749.20/28,026,004.20 = 9,094,445.20/x
  3. Step 3: Cross multiply
    18,699,749.20x = 28,026,004.20 × 9,094,445.20
  4. Step 4: Simplify right side
    18,699,749.20x = 254,880,959,371,869.81
  5. Step 5: Solve for x
    x = 254,880,959,371,869.81/18,699,749.20
  6. Step 6: Final answer
    x = 13,630,180.63

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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.