Home / 12,983,145.60-17,915,179.80-7,478,310.84

Finding the Fourth Proportional to 12,983,145.60, 17,915,179.80 and 7,478,310.84

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Solution

The fourth proportional to 12,983,145.60, 17,915,179.80 and 7,478,310.84 is: 10,319,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983,145.60 : 17,915,179.80 = 7,478,310.84 : x
  2. Step 2: Convert to fraction form
    12,983,145.60/17,915,179.80 = 7,478,310.84/x
  3. Step 3: Cross multiply
    12,983,145.60x = 17,915,179.80 × 7,478,310.84
  4. Step 4: Simplify right side
    12,983,145.60x = 133,975,283,298,889.03
  5. Step 5: Solve for x
    x = 133,975,283,298,889.03/12,983,145.60
  6. Step 6: Final answer
    x = 10,319,169.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.