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Finding the Fourth Proportional to 13,084,865.80, 19,627,298.70 and 12,497,000.20

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Solution

The fourth proportional to 13,084,865.80, 19,627,298.70 and 12,497,000.20 is: 18,745,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084,865.80 : 19,627,298.70 = 12,497,000.20 : x
  2. Step 2: Convert to fraction form
    13,084,865.80/19,627,298.70 = 12,497,000.20/x
  3. Step 3: Cross multiply
    13,084,865.80x = 19,627,298.70 × 12,497,000.20
  4. Step 4: Simplify right side
    13,084,865.80x = 245,282,355,779,359.72
  5. Step 5: Solve for x
    x = 245,282,355,779,359.72/13,084,865.80
  6. Step 6: Final answer
    x = 18,745,500.30

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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.