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Finding the Fourth Proportional to 27,643.01, 38,158.71 and 18,702.64

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Solution

The fourth proportional to 27,643.01, 38,158.71 and 18,702.64 is: 25,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.01 : 38,158.71 = 18,702.64 : x
  2. Step 2: Convert to fraction form
    27,643.01/38,158.71 = 18,702.64/x
  3. Step 3: Cross multiply
    27,643.01x = 38,158.71 × 18,702.64
  4. Step 4: Simplify right side
    27,643.01x = 713,668,615.99
  5. Step 5: Solve for x
    x = 713,668,615.99/27,643.01
  6. Step 6: Final answer
    x = 25,817.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.