Home / 13,259,319.40-19,888,979.10-11,131,805.80

Finding the Fourth Proportional to 13,259,319.40, 19,888,979.10 and 11,131,805.80

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Solution

The fourth proportional to 13,259,319.40, 19,888,979.10 and 11,131,805.80 is: 16,697,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259,319.40 : 19,888,979.10 = 11,131,805.80 : x
  2. Step 2: Convert to fraction form
    13,259,319.40/19,888,979.10 = 11,131,805.80/x
  3. Step 3: Cross multiply
    13,259,319.40x = 19,888,979.10 × 11,131,805.80
  4. Step 4: Simplify right side
    13,259,319.40x = 221,400,252,901,458.81
  5. Step 5: Solve for x
    x = 221,400,252,901,458.81/13,259,319.40
  6. Step 6: Final answer
    x = 16,697,708.70

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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.