Home / 22,145.08-30,558.68-12,455.99

Finding the Fourth Proportional to 22,145.08, 30,558.68 and 12,455.99

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Solution

The fourth proportional to 22,145.08, 30,558.68 and 12,455.99 is: 17,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,145.08 : 30,558.68 = 12,455.99 : x
  2. Step 2: Convert to fraction form
    22,145.08/30,558.68 = 12,455.99/x
  3. Step 3: Cross multiply
    22,145.08x = 30,558.68 × 12,455.99
  4. Step 4: Simplify right side
    22,145.08x = 380,638,550.21
  5. Step 5: Solve for x
    x = 380,638,550.21/22,145.08
  6. Step 6: Final answer
    x = 17,188.40

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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.