Home / 12,322.23-18,455.55-8,640.93

Finding the Fourth Proportional to 12,322.23, 18,455.55 and 8,640.93

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Solution

The fourth proportional to 12,322.23, 18,455.55 and 8,640.93 is: 12,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.23 : 18,455.55 = 8,640.93 : x
  2. Step 2: Convert to fraction form
    12,322.23/18,455.55 = 8,640.93/x
  3. Step 3: Cross multiply
    12,322.23x = 18,455.55 × 8,640.93
  4. Step 4: Simplify right side
    12,322.23x = 159,473,048.65
  5. Step 5: Solve for x
    x = 159,473,048.65/12,322.23
  6. Step 6: Final answer
    x = 12,941.90

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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.