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Finding the Fourth Proportional to 28,648.86, 42,955.62 and 9,924.54

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Solution

The fourth proportional to 28,648.86, 42,955.62 and 9,924.54 is: 14,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.86 : 42,955.62 = 9,924.54 : x
  2. Step 2: Convert to fraction form
    28,648.86/42,955.62 = 9,924.54/x
  3. Step 3: Cross multiply
    28,648.86x = 42,955.62 × 9,924.54
  4. Step 4: Simplify right side
    28,648.86x = 426,314,768.91
  5. Step 5: Solve for x
    x = 426,314,768.91/28,648.86
  6. Step 6: Final answer
    x = 14,880.69

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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.