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Finding the Fourth Proportional to 28,650.29, 42,976 and 9,930.93

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Solution

The fourth proportional to 28,650.29, 42,976 and 9,930.93 is: 14,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,650.29 : 42,976 = 9,930.93 : x
  2. Step 2: Convert to fraction form
    28,650.29/42,976 = 9,930.93/x
  3. Step 3: Cross multiply
    28,650.29x = 42,976 × 9,930.93
  4. Step 4: Simplify right side
    28,650.29x = 426,791,647.68
  5. Step 5: Solve for x
    x = 426,791,647.68/28,650.29
  6. Step 6: Final answer
    x = 14,896.59

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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.