Home / 18,398,291.78-25,389,812.92-10,138,649.64

Finding the Fourth Proportional to 18,398,291.78, 25,389,812.92 and 10,138,649.64

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Solution

The fourth proportional to 18,398,291.78, 25,389,812.92 and 10,138,649.64 is: 13,991,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398,291.78 : 25,389,812.92 = 10,138,649.64 : x
  2. Step 2: Convert to fraction form
    18,398,291.78/25,389,812.92 = 10,138,649.64/x
  3. Step 3: Cross multiply
    18,398,291.78x = 25,389,812.92 × 10,138,649.64
  4. Step 4: Simplify right side
    18,398,291.78x = 257,418,417,621,025.38
  5. Step 5: Solve for x
    x = 257,418,417,621,025.38/18,398,291.78
  6. Step 6: Final answer
    x = 13,991,430.33

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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.