Home / 28,723.56-39,638.20-16,148.32

Finding the Fourth Proportional to 28,723.56, 39,638.20 and 16,148.32

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Solution

The fourth proportional to 28,723.56, 39,638.20 and 16,148.32 is: 22,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.56 : 39,638.20 = 16,148.32 : x
  2. Step 2: Convert to fraction form
    28,723.56/39,638.20 = 16,148.32/x
  3. Step 3: Cross multiply
    28,723.56x = 39,638.20 × 16,148.32
  4. Step 4: Simplify right side
    28,723.56x = 640,090,337.82
  5. Step 5: Solve for x
    x = 640,090,337.82/28,723.56
  6. Step 6: Final answer
    x = 22,284.51

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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.