Home / 13,238.04-18,268.55-7,188.30

Finding the Fourth Proportional to 13,238.04, 18,268.55 and 7,188.30

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Solution

The fourth proportional to 13,238.04, 18,268.55 and 7,188.30 is: 9,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.04 : 18,268.55 = 7,188.30 : x
  2. Step 2: Convert to fraction form
    13,238.04/18,268.55 = 7,188.30/x
  3. Step 3: Cross multiply
    13,238.04x = 18,268.55 × 7,188.30
  4. Step 4: Simplify right side
    13,238.04x = 131,319,782.02
  5. Step 5: Solve for x
    x = 131,319,782.02/13,238.04
  6. Step 6: Final answer
    x = 9,919.88

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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.