Home / 18,342.36-27,509.63-5,191.20

Finding the Fourth Proportional to 18,342.36, 27,509.63 and 5,191.20

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Solution

The fourth proportional to 18,342.36, 27,509.63 and 5,191.20 is: 7,785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.36 : 27,509.63 = 5,191.20 : x
  2. Step 2: Convert to fraction form
    18,342.36/27,509.63 = 5,191.20/x
  3. Step 3: Cross multiply
    18,342.36x = 27,509.63 × 5,191.20
  4. Step 4: Simplify right side
    18,342.36x = 142,807,965.30
  5. Step 5: Solve for x
    x = 142,807,965.30/18,342.36
  6. Step 6: Final answer
    x = 7,785.69

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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.