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Finding the Fourth Proportional to 18,522.90, 27,763.47 and 9,143.01

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Solution

The fourth proportional to 18,522.90, 27,763.47 and 9,143.01 is: 13,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,522.90 : 27,763.47 = 9,143.01 : x
  2. Step 2: Convert to fraction form
    18,522.90/27,763.47 = 9,143.01/x
  3. Step 3: Cross multiply
    18,522.90x = 27,763.47 × 9,143.01
  4. Step 4: Simplify right side
    18,522.90x = 253,841,683.84
  5. Step 5: Solve for x
    x = 253,841,683.84/18,522.90
  6. Step 6: Final answer
    x = 13,704.21

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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.