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Finding the Fourth Proportional to 18,448.62, 27,681.06 and 9,681.42

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Solution

The fourth proportional to 18,448.62, 27,681.06 and 9,681.42 is: 14,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.62 : 27,681.06 = 9,681.42 : x
  2. Step 2: Convert to fraction form
    18,448.62/27,681.06 = 9,681.42/x
  3. Step 3: Cross multiply
    18,448.62x = 27,681.06 × 9,681.42
  4. Step 4: Simplify right side
    18,448.62x = 267,991,967.91
  5. Step 5: Solve for x
    x = 267,991,967.91/18,448.62
  6. Step 6: Final answer
    x = 14,526.40

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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.