Home / 12,388.02-18,581.31-9,059.64

Finding the Fourth Proportional to 12,388.02, 18,581.31 and 9,059.64

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Solution

The fourth proportional to 12,388.02, 18,581.31 and 9,059.64 is: 13,588.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.02 : 18,581.31 = 9,059.64 : x
  2. Step 2: Convert to fraction form
    12,388.02/18,581.31 = 9,059.64/x
  3. Step 3: Cross multiply
    12,388.02x = 18,581.31 × 9,059.64
  4. Step 4: Simplify right side
    12,388.02x = 168,339,979.33
  5. Step 5: Solve for x
    x = 168,339,979.33/12,388.02
  6. Step 6: Final answer
    x = 13,588.93

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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.