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Finding the Fourth Proportional to 28,708.06, 43,062.03 and 7,931.50

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Solution

The fourth proportional to 28,708.06, 43,062.03 and 7,931.50 is: 11,897.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.06 : 43,062.03 = 7,931.50 : x
  2. Step 2: Convert to fraction form
    28,708.06/43,062.03 = 7,931.50/x
  3. Step 3: Cross multiply
    28,708.06x = 43,062.03 × 7,931.50
  4. Step 4: Simplify right side
    28,708.06x = 341,546,490.95
  5. Step 5: Solve for x
    x = 341,546,490.95/28,708.06
  6. Step 6: Final answer
    x = 11,897.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.