Home / 18,915.41-26,112.12-10,956.09

Finding the Fourth Proportional to 18,915.41, 26,112.12 and 10,956.09

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Solution

The fourth proportional to 18,915.41, 26,112.12 and 10,956.09 is: 15,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.41 : 26,112.12 = 10,956.09 : x
  2. Step 2: Convert to fraction form
    18,915.41/26,112.12 = 10,956.09/x
  3. Step 3: Cross multiply
    18,915.41x = 26,112.12 × 10,956.09
  4. Step 4: Simplify right side
    18,915.41x = 286,086,736.81
  5. Step 5: Solve for x
    x = 286,086,736.81/18,915.41
  6. Step 6: Final answer
    x = 15,124.54

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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.