Home / 12,170,187.72-18,259,101.54-7,318,080.36

Finding the Fourth Proportional to 12,170,187.72, 18,259,101.54 and 7,318,080.36

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Solution

The fourth proportional to 12,170,187.72, 18,259,101.54 and 7,318,080.36 is: 10,979,417.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170,187.72 : 18,259,101.54 = 7,318,080.36 : x
  2. Step 2: Convert to fraction form
    12,170,187.72/18,259,101.54 = 7,318,080.36/x
  3. Step 3: Cross multiply
    12,170,187.72x = 18,259,101.54 × 7,318,080.36
  4. Step 4: Simplify right side
    12,170,187.72x = 133,621,572,371,119.75
  5. Step 5: Solve for x
    x = 133,621,572,371,119.75/12,170,187.72
  6. Step 6: Final answer
    x = 10,979,417.53

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1.5x scale

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.