Home / 12,345.64-18,519.36-3,580.60

Finding the Fourth Proportional to 12,345.64, 18,519.36 and 3,580.60

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Solution

The fourth proportional to 12,345.64, 18,519.36 and 3,580.60 is: 5,371.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.64 : 18,519.36 = 3,580.60 : x
  2. Step 2: Convert to fraction form
    12,345.64/18,519.36 = 3,580.60/x
  3. Step 3: Cross multiply
    12,345.64x = 18,519.36 × 3,580.60
  4. Step 4: Simplify right side
    12,345.64x = 66,310,420.42
  5. Step 5: Solve for x
    x = 66,310,420.42/12,345.64
  6. Step 6: Final answer
    x = 5,371.16

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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.