Home / 28,358.56-39,138.72-16,425.64

Finding the Fourth Proportional to 28,358.56, 39,138.72 and 16,425.64

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Solution

The fourth proportional to 28,358.56, 39,138.72 and 16,425.64 is: 22,669.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.56 : 39,138.72 = 16,425.64 : x
  2. Step 2: Convert to fraction form
    28,358.56/39,138.72 = 16,425.64/x
  3. Step 3: Cross multiply
    28,358.56x = 39,138.72 × 16,425.64
  4. Step 4: Simplify right side
    28,358.56x = 642,878,524.78
  5. Step 5: Solve for x
    x = 642,878,524.78/28,358.56
  6. Step 6: Final answer
    x = 22,669.65

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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.