Home / 13,671.77-20,484.56-8,395.81

Finding the Fourth Proportional to 13,671.77, 20,484.56 and 8,395.81

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Solution

The fourth proportional to 13,671.77, 20,484.56 and 8,395.81 is: 12,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.77 : 20,484.56 = 8,395.81 : x
  2. Step 2: Convert to fraction form
    13,671.77/20,484.56 = 8,395.81/x
  3. Step 3: Cross multiply
    13,671.77x = 20,484.56 × 8,395.81
  4. Step 4: Simplify right side
    13,671.77x = 171,984,443.47
  5. Step 5: Solve for x
    x = 171,984,443.47/13,671.77
  6. Step 6: Final answer
    x = 12,579.53

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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.