Home / 18,540.51-25,581.47-10,985.53

Finding the Fourth Proportional to 18,540.51, 25,581.47 and 10,985.53

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Solution

The fourth proportional to 18,540.51, 25,581.47 and 10,985.53 is: 15,157.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.51 : 25,581.47 = 10,985.53 : x
  2. Step 2: Convert to fraction form
    18,540.51/25,581.47 = 10,985.53/x
  3. Step 3: Cross multiply
    18,540.51x = 25,581.47 × 10,985.53
  4. Step 4: Simplify right side
    18,540.51x = 281,026,072.34
  5. Step 5: Solve for x
    x = 281,026,072.34/18,540.51
  6. Step 6: Final answer
    x = 15,157.41

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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.