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Finding the Fourth Proportional to 18,898.92, 28,348.45 and 5,751.25

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Solution

The fourth proportional to 18,898.92, 28,348.45 and 5,751.25 is: 8,626.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.92 : 28,348.45 = 5,751.25 : x
  2. Step 2: Convert to fraction form
    18,898.92/28,348.45 = 5,751.25/x
  3. Step 3: Cross multiply
    18,898.92x = 28,348.45 × 5,751.25
  4. Step 4: Simplify right side
    18,898.92x = 163,038,937.81
  5. Step 5: Solve for x
    x = 163,038,937.81/18,898.92
  6. Step 6: Final answer
    x = 8,626.89

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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.