Home / 12,381.88-18,566.09-5,623.75

Finding the Fourth Proportional to 12,381.88, 18,566.09 and 5,623.75

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Solution

The fourth proportional to 12,381.88, 18,566.09 and 5,623.75 is: 8,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.88 : 18,566.09 = 5,623.75 : x
  2. Step 2: Convert to fraction form
    12,381.88/18,566.09 = 5,623.75/x
  3. Step 3: Cross multiply
    12,381.88x = 18,566.09 × 5,623.75
  4. Step 4: Simplify right side
    12,381.88x = 104,411,048.64
  5. Step 5: Solve for x
    x = 104,411,048.64/12,381.88
  6. Step 6: Final answer
    x = 8,432.57

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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.