Home / 18,915.45-26,099.34-10,957.20

Finding the Fourth Proportional to 18,915.45, 26,099.34 and 10,957.20

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Solution

The fourth proportional to 18,915.45, 26,099.34 and 10,957.20 is: 15,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.45 : 26,099.34 = 10,957.20 : x
  2. Step 2: Convert to fraction form
    18,915.45/26,099.34 = 10,957.20/x
  3. Step 3: Cross multiply
    18,915.45x = 26,099.34 × 10,957.20
  4. Step 4: Simplify right side
    18,915.45x = 285,975,688.25
  5. Step 5: Solve for x
    x = 285,975,688.25/18,915.45
  6. Step 6: Final answer
    x = 15,118.63

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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.