Home / 18,637.19-25,719.39-10,139.38

Finding the Fourth Proportional to 18,637.19, 25,719.39 and 10,139.38

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Solution

The fourth proportional to 18,637.19, 25,719.39 and 10,139.38 is: 13,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.19 : 25,719.39 = 10,139.38 : x
  2. Step 2: Convert to fraction form
    18,637.19/25,719.39 = 10,139.38/x
  3. Step 3: Cross multiply
    18,637.19x = 25,719.39 × 10,139.38
  4. Step 4: Simplify right side
    18,637.19x = 260,778,604.28
  5. Step 5: Solve for x
    x = 260,778,604.28/18,637.19
  6. Step 6: Final answer
    x = 13,992.38

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1.5x scale

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.