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Finding the Fourth Proportional to 18,835.06, 28,259.07 and 8,454.10

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Solution

The fourth proportional to 18,835.06, 28,259.07 and 8,454.10 is: 12,684.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.06 : 28,259.07 = 8,454.10 : x
  2. Step 2: Convert to fraction form
    18,835.06/28,259.07 = 8,454.10/x
  3. Step 3: Cross multiply
    18,835.06x = 28,259.07 × 8,454.10
  4. Step 4: Simplify right side
    18,835.06x = 238,905,003.69
  5. Step 5: Solve for x
    x = 238,905,003.69/18,835.06
  6. Step 6: Final answer
    x = 12,684.06

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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.