Home / 13,188,775.30-18,200,616.80-7,308,507.72

Finding the Fourth Proportional to 13,188,775.30, 18,200,616.80 and 7,308,507.72

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Solution

The fourth proportional to 13,188,775.30, 18,200,616.80 and 7,308,507.72 is: 10,085,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,775.30 : 18,200,616.80 = 7,308,507.72 : x
  2. Step 2: Convert to fraction form
    13,188,775.30/18,200,616.80 = 7,308,507.72/x
  3. Step 3: Cross multiply
    13,188,775.30x = 18,200,616.80 × 7,308,507.72
  4. Step 4: Simplify right side
    13,188,775.30x = 133,019,348,391,561.70
  5. Step 5: Solve for x
    x = 133,019,348,391,561.70/13,188,775.30
  6. Step 6: Final answer
    x = 10,085,799.88

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1.5x scale

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.