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Finding the Fourth Proportional to 16,789,212.20, 25,183,818.30 and 15,501,506.60

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Solution

The fourth proportional to 16,789,212.20, 25,183,818.30 and 15,501,506.60 is: 23,252,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,789,212.20 : 25,183,818.30 = 15,501,506.60 : x
  2. Step 2: Convert to fraction form
    16,789,212.20/25,183,818.30 = 15,501,506.60/x
  3. Step 3: Cross multiply
    16,789,212.20x = 25,183,818.30 × 15,501,506.60
  4. Step 4: Simplify right side
    16,789,212.20x = 390,387,125,590,650.81
  5. Step 5: Solve for x
    x = 390,387,125,590,650.81/16,789,212.20
  6. Step 6: Final answer
    x = 23,252,259.90

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1.5x scale

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.