Home / 18,121.71-25,006.68-10,055.78

Finding the Fourth Proportional to 18,121.71, 25,006.68 and 10,055.78

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Solution

The fourth proportional to 18,121.71, 25,006.68 and 10,055.78 is: 13,876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.71 : 25,006.68 = 10,055.78 : x
  2. Step 2: Convert to fraction form
    18,121.71/25,006.68 = 10,055.78/x
  3. Step 3: Cross multiply
    18,121.71x = 25,006.68 × 10,055.78
  4. Step 4: Simplify right side
    18,121.71x = 251,461,547.58
  5. Step 5: Solve for x
    x = 251,461,547.58/18,121.71
  6. Step 6: Final answer
    x = 13,876.26

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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.