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Finding the Fourth Proportional to 18,986, 26,200.80 and 10,602.56

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Solution

The fourth proportional to 18,986, 26,200.80 and 10,602.56 is: 14,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986 : 26,200.80 = 10,602.56 : x
  2. Step 2: Convert to fraction form
    18,986/26,200.80 = 10,602.56/x
  3. Step 3: Cross multiply
    18,986x = 26,200.80 × 10,602.56
  4. Step 4: Simplify right side
    18,986x = 277,795,554.05
  5. Step 5: Solve for x
    x = 277,795,554.05/18,986
  6. Step 6: Final answer
    x = 14,631.60

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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.