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Finding the Fourth Proportional to 18,888.33, 26,064.88 and 10,389.08

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Solution

The fourth proportional to 18,888.33, 26,064.88 and 10,389.08 is: 14,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.33 : 26,064.88 = 10,389.08 : x
  2. Step 2: Convert to fraction form
    18,888.33/26,064.88 = 10,389.08/x
  3. Step 3: Cross multiply
    18,888.33x = 26,064.88 × 10,389.08
  4. Step 4: Simplify right side
    18,888.33x = 270,790,192.09
  5. Step 5: Solve for x
    x = 270,790,192.09/18,888.33
  6. Step 6: Final answer
    x = 14,336.37

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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.