Home / 12,301,979.40-18,452,969.10-7,179,150.60

Finding the Fourth Proportional to 12,301,979.40, 18,452,969.10 and 7,179,150.60

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Solution

The fourth proportional to 12,301,979.40, 18,452,969.10 and 7,179,150.60 is: 10,768,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,301,979.40 : 18,452,969.10 = 7,179,150.60 : x
  2. Step 2: Convert to fraction form
    12,301,979.40/18,452,969.10 = 7,179,150.60/x
  3. Step 3: Cross multiply
    12,301,979.40x = 18,452,969.10 × 7,179,150.60
  4. Step 4: Simplify right side
    12,301,979.40x = 132,476,644,186,046.47
  5. Step 5: Solve for x
    x = 132,476,644,186,046.47/12,301,979.40
  6. Step 6: Final answer
    x = 10,768,725.90

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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.