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Finding the Fourth Proportional to 12,574.99, 18,865.55 and 8,884.43

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Solution

The fourth proportional to 12,574.99, 18,865.55 and 8,884.43 is: 13,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.99 : 18,865.55 = 8,884.43 : x
  2. Step 2: Convert to fraction form
    12,574.99/18,865.55 = 8,884.43/x
  3. Step 3: Cross multiply
    12,574.99x = 18,865.55 × 8,884.43
  4. Step 4: Simplify right side
    12,574.99x = 167,609,564.06
  5. Step 5: Solve for x
    x = 167,609,564.06/12,574.99
  6. Step 6: Final answer
    x = 13,328.81

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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.