Home / 28,915.94-39,904.29-16,983.09

Finding the Fourth Proportional to 28,915.94, 39,904.29 and 16,983.09

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Solution

The fourth proportional to 28,915.94, 39,904.29 and 16,983.09 is: 23,436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.94 : 39,904.29 = 16,983.09 : x
  2. Step 2: Convert to fraction form
    28,915.94/39,904.29 = 16,983.09/x
  3. Step 3: Cross multiply
    28,915.94x = 39,904.29 × 16,983.09
  4. Step 4: Simplify right side
    28,915.94x = 677,698,148.46
  5. Step 5: Solve for x
    x = 677,698,148.46/28,915.94
  6. Step 6: Final answer
    x = 23,436.84

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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.