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Finding the Fourth Proportional to 18,567.88, 27,839.36 and 7,312.93

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Solution

The fourth proportional to 18,567.88, 27,839.36 and 7,312.93 is: 10,964.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,567.88 : 27,839.36 = 7,312.93 : x
  2. Step 2: Convert to fraction form
    18,567.88/27,839.36 = 7,312.93/x
  3. Step 3: Cross multiply
    18,567.88x = 27,839.36 × 7,312.93
  4. Step 4: Simplify right side
    18,567.88x = 203,587,239.61
  5. Step 5: Solve for x
    x = 203,587,239.61/18,567.88
  6. Step 6: Final answer
    x = 10,964.49

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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.