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Finding the Fourth Proportional to 18,951.59, 28,428.75 and 5,802.25

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Solution

The fourth proportional to 18,951.59, 28,428.75 and 5,802.25 is: 8,703.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.59 : 28,428.75 = 5,802.25 : x
  2. Step 2: Convert to fraction form
    18,951.59/28,428.75 = 5,802.25/x
  3. Step 3: Cross multiply
    18,951.59x = 28,428.75 × 5,802.25
  4. Step 4: Simplify right side
    18,951.59x = 164,950,714.69
  5. Step 5: Solve for x
    x = 164,950,714.69/18,951.59
  6. Step 6: Final answer
    x = 8,703.79

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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.