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Finding the Fourth Proportional to 28,898.63, 43,347.81 and 9,178.71

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Solution

The fourth proportional to 28,898.63, 43,347.81 and 9,178.71 is: 13,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.63 : 43,347.81 = 9,178.71 : x
  2. Step 2: Convert to fraction form
    28,898.63/43,347.81 = 9,178.71/x
  3. Step 3: Cross multiply
    28,898.63x = 43,347.81 × 9,178.71
  4. Step 4: Simplify right side
    28,898.63x = 397,876,714.49
  5. Step 5: Solve for x
    x = 397,876,714.49/28,898.63
  6. Step 6: Final answer
    x = 13,768.01

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Similar ratio
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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.