Home / 13,122,097.20-19,683,145.80-12,643,800.30

Finding the Fourth Proportional to 13,122,097.20, 19,683,145.80 and 12,643,800.30

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Solution

The fourth proportional to 13,122,097.20, 19,683,145.80 and 12,643,800.30 is: 18,965,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,097.20 : 19,683,145.80 = 12,643,800.30 : x
  2. Step 2: Convert to fraction form
    13,122,097.20/19,683,145.80 = 12,643,800.30/x
  3. Step 3: Cross multiply
    13,122,097.20x = 19,683,145.80 × 12,643,800.30
  4. Step 4: Simplify right side
    13,122,097.20x = 248,869,764,770,983.75
  5. Step 5: Solve for x
    x = 248,869,764,770,983.75/13,122,097.20
  6. Step 6: Final answer
    x = 18,965,700.45

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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.