Home / 18,387.81-27,577.16-5,240.30

Finding the Fourth Proportional to 18,387.81, 27,577.16 and 5,240.30

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Solution

The fourth proportional to 18,387.81, 27,577.16 and 5,240.30 is: 7,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.81 : 27,577.16 = 5,240.30 : x
  2. Step 2: Convert to fraction form
    18,387.81/27,577.16 = 5,240.30/x
  3. Step 3: Cross multiply
    18,387.81x = 27,577.16 × 5,240.30
  4. Step 4: Simplify right side
    18,387.81x = 144,512,447.11
  5. Step 5: Solve for x
    x = 144,512,447.11/18,387.81
  6. Step 6: Final answer
    x = 7,859.14

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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.