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Finding the Fourth Proportional to 18,143.64, 27,225.83 and 7,048.89

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Solution

The fourth proportional to 18,143.64, 27,225.83 and 7,048.89 is: 10,577.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.64 : 27,225.83 = 7,048.89 : x
  2. Step 2: Convert to fraction form
    18,143.64/27,225.83 = 7,048.89/x
  3. Step 3: Cross multiply
    18,143.64x = 27,225.83 × 7,048.89
  4. Step 4: Simplify right side
    18,143.64x = 191,911,845.58
  5. Step 5: Solve for x
    x = 191,911,845.58/18,143.64
  6. Step 6: Final answer
    x = 10,577.36

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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.