Home / 28,492.76-39,322.51-18,915.73

Finding the Fourth Proportional to 28,492.76, 39,322.51 and 18,915.73

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Solution

The fourth proportional to 28,492.76, 39,322.51 and 18,915.73 is: 26,105.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.76 : 39,322.51 = 18,915.73 : x
  2. Step 2: Convert to fraction form
    28,492.76/39,322.51 = 18,915.73/x
  3. Step 3: Cross multiply
    28,492.76x = 39,322.51 × 18,915.73
  4. Step 4: Simplify right side
    28,492.76x = 743,813,836.49
  5. Step 5: Solve for x
    x = 743,813,836.49/28,492.76
  6. Step 6: Final answer
    x = 26,105.36

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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.