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Finding the Fourth Proportional to 18,702.81, 28,058.79 and 6,222.81

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Solution

The fourth proportional to 18,702.81, 28,058.79 and 6,222.81 is: 9,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.81 : 28,058.79 = 6,222.81 : x
  2. Step 2: Convert to fraction form
    18,702.81/28,058.79 = 6,222.81/x
  3. Step 3: Cross multiply
    18,702.81x = 28,058.79 × 6,222.81
  4. Step 4: Simplify right side
    18,702.81x = 174,604,519.00
  5. Step 5: Solve for x
    x = 174,604,519.00/18,702.81
  6. Step 6: Final answer
    x = 9,335.74

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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.