Home / 18,219.67-25,138.75-10,261.89

Finding the Fourth Proportional to 18,219.67, 25,138.75 and 10,261.89

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Solution

The fourth proportional to 18,219.67, 25,138.75 and 10,261.89 is: 14,158.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.67 : 25,138.75 = 10,261.89 : x
  2. Step 2: Convert to fraction form
    18,219.67/25,138.75 = 10,261.89/x
  3. Step 3: Cross multiply
    18,219.67x = 25,138.75 × 10,261.89
  4. Step 4: Simplify right side
    18,219.67x = 257,971,087.24
  5. Step 5: Solve for x
    x = 257,971,087.24/18,219.67
  6. Step 6: Final answer
    x = 14,158.93

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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.