Home / 18,540.63-25,581.64-10,985.66

Finding the Fourth Proportional to 18,540.63, 25,581.64 and 10,985.66

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Solution

The fourth proportional to 18,540.63, 25,581.64 and 10,985.66 is: 15,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.63 : 25,581.64 = 10,985.66 : x
  2. Step 2: Convert to fraction form
    18,540.63/25,581.64 = 10,985.66/x
  3. Step 3: Cross multiply
    18,540.63x = 25,581.64 × 10,985.66
  4. Step 4: Simplify right side
    18,540.63x = 281,031,181.04
  5. Step 5: Solve for x
    x = 281,031,181.04/18,540.63
  6. Step 6: Final answer
    x = 15,157.58

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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.