Home / 18,933.84-26,108.19-12,888

Finding the Fourth Proportional to 18,933.84, 26,108.19 and 12,888

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Solution

The fourth proportional to 18,933.84, 26,108.19 and 12,888 is: 17,771.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.84 : 26,108.19 = 12,888 : x
  2. Step 2: Convert to fraction form
    18,933.84/26,108.19 = 12,888/x
  3. Step 3: Cross multiply
    18,933.84x = 26,108.19 × 12,888
  4. Step 4: Simplify right side
    18,933.84x = 336,482,352.72
  5. Step 5: Solve for x
    x = 336,482,352.72/18,933.84
  6. Step 6: Final answer
    x = 17,771.48

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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.