Home / 18,129.36-27,192.72-6,280.32

Finding the Fourth Proportional to 18,129.36, 27,192.72 and 6,280.32

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Solution

The fourth proportional to 18,129.36, 27,192.72 and 6,280.32 is: 9,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.36 : 27,192.72 = 6,280.32 : x
  2. Step 2: Convert to fraction form
    18,129.36/27,192.72 = 6,280.32/x
  3. Step 3: Cross multiply
    18,129.36x = 27,192.72 × 6,280.32
  4. Step 4: Simplify right side
    18,129.36x = 170,778,983.27
  5. Step 5: Solve for x
    x = 170,778,983.27/18,129.36
  6. Step 6: Final answer
    x = 9,420.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.