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Finding the Fourth Proportional to 18,802.63, 28,173.18 and 11,384.62

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Solution

The fourth proportional to 18,802.63, 28,173.18 and 11,384.62 is: 17,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.63 : 28,173.18 = 11,384.62 : x
  2. Step 2: Convert to fraction form
    18,802.63/28,173.18 = 11,384.62/x
  3. Step 3: Cross multiply
    18,802.63x = 28,173.18 × 11,384.62
  4. Step 4: Simplify right side
    18,802.63x = 320,740,948.49
  5. Step 5: Solve for x
    x = 320,740,948.49/18,802.63
  6. Step 6: Final answer
    x = 17,058.30

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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.