Home / 28,851.70-39,815.86-16,923.64

Finding the Fourth Proportional to 28,851.70, 39,815.86 and 16,923.64

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Solution

The fourth proportional to 28,851.70, 39,815.86 and 16,923.64 is: 23,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.70 : 39,815.86 = 16,923.64 : x
  2. Step 2: Convert to fraction form
    28,851.70/39,815.86 = 16,923.64/x
  3. Step 3: Cross multiply
    28,851.70x = 39,815.86 × 16,923.64
  4. Step 4: Simplify right side
    28,851.70x = 673,829,280.93
  5. Step 5: Solve for x
    x = 673,829,280.93/28,851.70
  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.