Home / 12,645,431.40-18,968,176.26-7,289,089.32

Finding the Fourth Proportional to 12,645,431.40, 18,968,176.26 and 7,289,089.32

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Solution

The fourth proportional to 12,645,431.40, 18,968,176.26 and 7,289,089.32 is: 10,933,650.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,431.40 : 18,968,176.26 = 7,289,089.32 : x
  2. Step 2: Convert to fraction form
    12,645,431.40/18,968,176.26 = 7,289,089.32/x
  3. Step 3: Cross multiply
    12,645,431.40x = 18,968,176.26 × 7,289,089.32
  4. Step 4: Simplify right side
    12,645,431.40x = 138,260,730,996,643.56
  5. Step 5: Solve for x
    x = 138,260,730,996,643.56/12,645,431.40
  6. Step 6: Final answer
    x = 10,933,650.79

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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.