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Finding the Fourth Proportional to 18,852, 28,278 and 5,001.12

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Solution

The fourth proportional to 18,852, 28,278 and 5,001.12 is: 7,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852 : 28,278 = 5,001.12 : x
  2. Step 2: Convert to fraction form
    18,852/28,278 = 5,001.12/x
  3. Step 3: Cross multiply
    18,852x = 28,278 × 5,001.12
  4. Step 4: Simplify right side
    18,852x = 141,421,671.36
  5. Step 5: Solve for x
    x = 141,421,671.36/18,852
  6. Step 6: Final answer
    x = 7,501.68

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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.