Home / 18,127.72-25,015.86-10,169.80

Finding the Fourth Proportional to 18,127.72, 25,015.86 and 10,169.80

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Solution

The fourth proportional to 18,127.72, 25,015.86 and 10,169.80 is: 14,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,127.72 : 25,015.86 = 10,169.80 : x
  2. Step 2: Convert to fraction form
    18,127.72/25,015.86 = 10,169.80/x
  3. Step 3: Cross multiply
    18,127.72x = 25,015.86 × 10,169.80
  4. Step 4: Simplify right side
    18,127.72x = 254,406,293.03
  5. Step 5: Solve for x
    x = 254,406,293.03/18,127.72
  6. Step 6: Final answer
    x = 14,034.10

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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.