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Finding the Fourth Proportional to 28,014.12, 42,021.18 and 7,236

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Solution

The fourth proportional to 28,014.12, 42,021.18 and 7,236 is: 10,854.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.12 : 42,021.18 = 7,236 : x
  2. Step 2: Convert to fraction form
    28,014.12/42,021.18 = 7,236/x
  3. Step 3: Cross multiply
    28,014.12x = 42,021.18 × 7,236
  4. Step 4: Simplify right side
    28,014.12x = 304,065,258.48
  5. Step 5: Solve for x
    x = 304,065,258.48/28,014.12
  6. Step 6: Final answer
    x = 10,854.00

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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.