Home / 18,861.78-26,028.09-10,902.72

Finding the Fourth Proportional to 18,861.78, 26,028.09 and 10,902.72

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Solution

The fourth proportional to 18,861.78, 26,028.09 and 10,902.72 is: 15,045.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.78 : 26,028.09 = 10,902.72 : x
  2. Step 2: Convert to fraction form
    18,861.78/26,028.09 = 10,902.72/x
  3. Step 3: Cross multiply
    18,861.78x = 26,028.09 × 10,902.72
  4. Step 4: Simplify right side
    18,861.78x = 283,776,977.40
  5. Step 5: Solve for x
    x = 283,776,977.40/18,861.78
  6. Step 6: Final answer
    x = 15,045.08

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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.