Home / 18,220.49-25,146.07-10,666.36

Finding the Fourth Proportional to 18,220.49, 25,146.07 and 10,666.36

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Solution

The fourth proportional to 18,220.49, 25,146.07 and 10,666.36 is: 14,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.49 : 25,146.07 = 10,666.36 : x
  2. Step 2: Convert to fraction form
    18,220.49/25,146.07 = 10,666.36/x
  3. Step 3: Cross multiply
    18,220.49x = 25,146.07 × 10,666.36
  4. Step 4: Simplify right side
    18,220.49x = 268,217,039.97
  5. Step 5: Solve for x
    x = 268,217,039.97/18,220.49
  6. Step 6: Final answer
    x = 14,720.63

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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.