Home / 12,909,639.20-19,406,449.20-9,149,165.60

Finding the Fourth Proportional to 12,909,639.20, 19,406,449.20 and 9,149,165.60

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Solution

The fourth proportional to 12,909,639.20, 19,406,449.20 and 9,149,165.60 is: 13,753,507.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909,639.20 : 19,406,449.20 = 9,149,165.60 : x
  2. Step 2: Convert to fraction form
    12,909,639.20/19,406,449.20 = 9,149,165.60/x
  3. Step 3: Cross multiply
    12,909,639.20x = 19,406,449.20 × 9,149,165.60
  4. Step 4: Simplify right side
    12,909,639.20x = 177,552,817,438,787.50
  5. Step 5: Solve for x
    x = 177,552,817,438,787.50/12,909,639.20
  6. Step 6: Final answer
    x = 13,753,507.34

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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.