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Finding the Fourth Proportional to 18,647.90, 27,971.93 and 7,554.80

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Solution

The fourth proportional to 18,647.90, 27,971.93 and 7,554.80 is: 11,332.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.90 : 27,971.93 = 7,554.80 : x
  2. Step 2: Convert to fraction form
    18,647.90/27,971.93 = 7,554.80/x
  3. Step 3: Cross multiply
    18,647.90x = 27,971.93 × 7,554.80
  4. Step 4: Simplify right side
    18,647.90x = 211,322,159.13
  5. Step 5: Solve for x
    x = 211,322,159.13/18,647.90
  6. Step 6: Final answer
    x = 11,332.23

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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.