Home / 18,143.60-25,040.75-10,186.36

Finding the Fourth Proportional to 18,143.60, 25,040.75 and 10,186.36

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Solution

The fourth proportional to 18,143.60, 25,040.75 and 10,186.36 is: 14,058.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.60 : 25,040.75 = 10,186.36 : x
  2. Step 2: Convert to fraction form
    18,143.60/25,040.75 = 10,186.36/x
  3. Step 3: Cross multiply
    18,143.60x = 25,040.75 × 10,186.36
  4. Step 4: Simplify right side
    18,143.60x = 255,073,980.64
  5. Step 5: Solve for x
    x = 255,073,980.64/18,143.60
  6. Step 6: Final answer
    x = 14,058.62

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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.