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Finding the Fourth Proportional to 18,425.12, 25,427.16 and 10,042.16

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Solution

The fourth proportional to 18,425.12, 25,427.16 and 10,042.16 is: 13,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.12 : 25,427.16 = 10,042.16 : x
  2. Step 2: Convert to fraction form
    18,425.12/25,427.16 = 10,042.16/x
  3. Step 3: Cross multiply
    18,425.12x = 25,427.16 × 10,042.16
  4. Step 4: Simplify right side
    18,425.12x = 255,343,609.07
  5. Step 5: Solve for x
    x = 255,343,609.07/18,425.12
  6. Step 6: Final answer
    x = 13,858.45

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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.