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Finding the Fourth Proportional to 18,422.60, 27,602.67 and 11,385.08

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Solution

The fourth proportional to 18,422.60, 27,602.67 and 11,385.08 is: 17,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.60 : 27,602.67 = 11,385.08 : x
  2. Step 2: Convert to fraction form
    18,422.60/27,602.67 = 11,385.08/x
  3. Step 3: Cross multiply
    18,422.60x = 27,602.67 × 11,385.08
  4. Step 4: Simplify right side
    18,422.60x = 314,258,606.16
  5. Step 5: Solve for x
    x = 314,258,606.16/18,422.60
  6. Step 6: Final answer
    x = 17,058.32

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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.