Home / 18,129.36-25,018.56-10,171.58

Finding the Fourth Proportional to 18,129.36, 25,018.56 and 10,171.58

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Solution

The fourth proportional to 18,129.36, 25,018.56 and 10,171.58 is: 14,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.36 : 25,018.56 = 10,171.58 : x
  2. Step 2: Convert to fraction form
    18,129.36/25,018.56 = 10,171.58/x
  3. Step 3: Cross multiply
    18,129.36x = 25,018.56 × 10,171.58
  4. Step 4: Simplify right side
    18,129.36x = 254,478,284.52
  5. Step 5: Solve for x
    x = 254,478,284.52/18,129.36
  6. Step 6: Final answer
    x = 14,036.80

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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.