Home / 12,442.90-18,664.42-3,558.20

Finding the Fourth Proportional to 12,442.90, 18,664.42 and 3,558.20

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Solution

The fourth proportional to 12,442.90, 18,664.42 and 3,558.20 is: 5,337.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.90 : 18,664.42 = 3,558.20 : x
  2. Step 2: Convert to fraction form
    12,442.90/18,664.42 = 3,558.20/x
  3. Step 3: Cross multiply
    12,442.90x = 18,664.42 × 3,558.20
  4. Step 4: Simplify right side
    12,442.90x = 66,411,739.24
  5. Step 5: Solve for x
    x = 66,411,739.24/12,442.90
  6. Step 6: Final answer
    x = 5,337.32

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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.