Home / 54,207.28-81,290.68-18,658.64

Finding the Fourth Proportional to 54,207.28, 81,290.68 and 18,658.64

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Solution

The fourth proportional to 54,207.28, 81,290.68 and 18,658.64 is: 27,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,207.28 : 81,290.68 = 18,658.64 : x
  2. Step 2: Convert to fraction form
    54,207.28/81,290.68 = 18,658.64/x
  3. Step 3: Cross multiply
    54,207.28x = 81,290.68 × 18,658.64
  4. Step 4: Simplify right side
    54,207.28x = 1,516,773,533.48
  5. Step 5: Solve for x
    x = 1,516,773,533.48/54,207.28
  6. Step 6: Final answer
    x = 27,980.99

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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.