Home / 15,298,155-21,130,411.86-11,105,147.79

Finding the Fourth Proportional to 15,298,155, 21,130,411.86 and 11,105,147.79

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Solution

The fourth proportional to 15,298,155, 21,130,411.86 and 11,105,147.79 is: 15,338,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298,155 : 21,130,411.86 = 11,105,147.79 : x
  2. Step 2: Convert to fraction form
    15,298,155/21,130,411.86 = 11,105,147.79/x
  3. Step 3: Cross multiply
    15,298,155x = 21,130,411.86 × 11,105,147.79
  4. Step 4: Simplify right side
    15,298,155x = 234,656,346,568,868.75
  5. Step 5: Solve for x
    x = 234,656,346,568,868.75/15,298,155
  6. Step 6: Final answer
    x = 15,338,865.80

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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.