Home / 15,386,556.39-21,122,258.31-13,207,316.19

Finding the Fourth Proportional to 15,386,556.39, 21,122,258.31 and 13,207,316.19

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Solution

The fourth proportional to 15,386,556.39, 21,122,258.31 and 13,207,316.19 is: 18,130,654.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386,556.39 : 21,122,258.31 = 13,207,316.19 : x
  2. Step 2: Convert to fraction form
    15,386,556.39/21,122,258.31 = 13,207,316.19/x
  3. Step 3: Cross multiply
    15,386,556.39x = 21,122,258.31 × 13,207,316.19
  4. Step 4: Simplify right side
    15,386,556.39x = 278,968,344,147,025
  5. Step 5: Solve for x
    x = 278,968,344,147,025/15,386,556.39
  6. Step 6: Final answer
    x = 18,130,654.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.