Home / 18,129.49-25,018.67-10,172.45

Finding the Fourth Proportional to 18,129.49, 25,018.67 and 10,172.45

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Solution

The fourth proportional to 18,129.49, 25,018.67 and 10,172.45 is: 14,037.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.49 : 25,018.67 = 10,172.45 : x
  2. Step 2: Convert to fraction form
    18,129.49/25,018.67 = 10,172.45/x
  3. Step 3: Cross multiply
    18,129.49x = 25,018.67 × 10,172.45
  4. Step 4: Simplify right side
    18,129.49x = 254,501,118.78
  5. Step 5: Solve for x
    x = 254,501,118.78/18,129.49
  6. Step 6: Final answer
    x = 14,037.97

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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.