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Finding the Fourth Proportional to 28,898.16, 39,879 and 16,151.52

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Solution

The fourth proportional to 28,898.16, 39,879 and 16,151.52 is: 22,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.16 : 39,879 = 16,151.52 : x
  2. Step 2: Convert to fraction form
    28,898.16/39,879 = 16,151.52/x
  3. Step 3: Cross multiply
    28,898.16x = 39,879 × 16,151.52
  4. Step 4: Simplify right side
    28,898.16x = 644,106,466.08
  5. Step 5: Solve for x
    x = 644,106,466.08/28,898.16
  6. Step 6: Final answer
    x = 22,288.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.