Home / 13,526.89-18,672.32-12,108.07

Finding the Fourth Proportional to 13,526.89, 18,672.32 and 12,108.07

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Solution

The fourth proportional to 13,526.89, 18,672.32 and 12,108.07 is: 16,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,526.89 : 18,672.32 = 12,108.07 : x
  2. Step 2: Convert to fraction form
    13,526.89/18,672.32 = 12,108.07/x
  3. Step 3: Cross multiply
    13,526.89x = 18,672.32 × 12,108.07
  4. Step 4: Simplify right side
    13,526.89x = 226,085,757.62
  5. Step 5: Solve for x
    x = 226,085,757.62/13,526.89
  6. Step 6: Final answer
    x = 16,713.80

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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.