Home / 28,869.72-39,828.96-16,928.64

Finding the Fourth Proportional to 28,869.72, 39,828.96 and 16,928.64

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Solution

The fourth proportional to 28,869.72, 39,828.96 and 16,928.64 is: 23,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.72 : 39,828.96 = 16,928.64 : x
  2. Step 2: Convert to fraction form
    28,869.72/39,828.96 = 16,928.64/x
  3. Step 3: Cross multiply
    28,869.72x = 39,828.96 × 16,928.64
  4. Step 4: Simplify right side
    28,869.72x = 674,250,125.41
  5. Step 5: Solve for x
    x = 674,250,125.41/28,869.72
  6. Step 6: Final answer
    x = 23,354.92

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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.