Home / 18,915.87-26,104.56-10,418.34

Finding the Fourth Proportional to 18,915.87, 26,104.56 and 10,418.34

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Solution

The fourth proportional to 18,915.87, 26,104.56 and 10,418.34 is: 14,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.87 : 26,104.56 = 10,418.34 : x
  2. Step 2: Convert to fraction form
    18,915.87/26,104.56 = 10,418.34/x
  3. Step 3: Cross multiply
    18,915.87x = 26,104.56 × 10,418.34
  4. Step 4: Simplify right side
    18,915.87x = 271,966,181.63
  5. Step 5: Solve for x
    x = 271,966,181.63/18,915.87
  6. Step 6: Final answer
    x = 14,377.67

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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.