Home / 18,214.36-27,322.08-7,120.60

Finding the Fourth Proportional to 18,214.36, 27,322.08 and 7,120.60

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Solution

The fourth proportional to 18,214.36, 27,322.08 and 7,120.60 is: 10,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,214.36 : 27,322.08 = 7,120.60 : x
  2. Step 2: Convert to fraction form
    18,214.36/27,322.08 = 7,120.60/x
  3. Step 3: Cross multiply
    18,214.36x = 27,322.08 × 7,120.60
  4. Step 4: Simplify right side
    18,214.36x = 194,549,602.85
  5. Step 5: Solve for x
    x = 194,549,602.85/18,214.36
  6. Step 6: Final answer
    x = 10,681.11

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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.