Home / 18,427.68-27,621.09-7,331.40

Finding the Fourth Proportional to 18,427.68, 27,621.09 and 7,331.40

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Solution

The fourth proportional to 18,427.68, 27,621.09 and 7,331.40 is: 10,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.68 : 27,621.09 = 7,331.40 : x
  2. Step 2: Convert to fraction form
    18,427.68/27,621.09 = 7,331.40/x
  3. Step 3: Cross multiply
    18,427.68x = 27,621.09 × 7,331.40
  4. Step 4: Simplify right side
    18,427.68x = 202,501,259.23
  5. Step 5: Solve for x
    x = 202,501,259.23/18,427.68
  6. Step 6: Final answer
    x = 10,988.97

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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.