Home / 18,540.54-25,581.51-10,985.56

Finding the Fourth Proportional to 18,540.54, 25,581.51 and 10,985.56

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Solution

The fourth proportional to 18,540.54, 25,581.51 and 10,985.56 is: 15,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.54 : 25,581.51 = 10,985.56 : x
  2. Step 2: Convert to fraction form
    18,540.54/25,581.51 = 10,985.56/x
  3. Step 3: Cross multiply
    18,540.54x = 25,581.51 × 10,985.56
  4. Step 4: Simplify right side
    18,540.54x = 281,027,345.51
  5. Step 5: Solve for x
    x = 281,027,345.51/18,540.54
  6. Step 6: Final answer
    x = 15,157.45

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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.