Home / 28,912.40-39,899.96-16,165.23

Finding the Fourth Proportional to 28,912.40, 39,899.96 and 16,165.23

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Solution

The fourth proportional to 28,912.40, 39,899.96 and 16,165.23 is: 22,308.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.40 : 39,899.96 = 16,165.23 : x
  2. Step 2: Convert to fraction form
    28,912.40/39,899.96 = 16,165.23/x
  3. Step 3: Cross multiply
    28,912.40x = 39,899.96 × 16,165.23
  4. Step 4: Simplify right side
    28,912.40x = 644,992,030.39
  5. Step 5: Solve for x
    x = 644,992,030.39/28,912.40
  6. Step 6: Final answer
    x = 22,308.49

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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.