Home / 12,346.36-17,038.20-8,815.60

Finding the Fourth Proportional to 12,346.36, 17,038.20 and 8,815.60

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Solution

The fourth proportional to 12,346.36, 17,038.20 and 8,815.60 is: 12,165.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346.36 : 17,038.20 = 8,815.60 : x
  2. Step 2: Convert to fraction form
    12,346.36/17,038.20 = 8,815.60/x
  3. Step 3: Cross multiply
    12,346.36x = 17,038.20 × 8,815.60
  4. Step 4: Simplify right side
    12,346.36x = 150,201,955.92
  5. Step 5: Solve for x
    x = 150,201,955.92/12,346.36
  6. Step 6: Final answer
    x = 12,165.69

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1.5x scale

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.