Home / 13,564.47-18,712.74-8,786.01

Finding the Fourth Proportional to 13,564.47, 18,712.74 and 8,786.01

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Solution

The fourth proportional to 13,564.47, 18,712.74 and 8,786.01 is: 12,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.47 : 18,712.74 = 8,786.01 : x
  2. Step 2: Convert to fraction form
    13,564.47/18,712.74 = 8,786.01/x
  3. Step 3: Cross multiply
    13,564.47x = 18,712.74 × 8,786.01
  4. Step 4: Simplify right side
    13,564.47x = 164,410,263.23
  5. Step 5: Solve for x
    x = 164,410,263.23/13,564.47
  6. Step 6: Final answer
    x = 12,120.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.