Home / 28,730.85-39,647.12-16,155.60

Finding the Fourth Proportional to 28,730.85, 39,647.12 and 16,155.60

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Solution

The fourth proportional to 28,730.85, 39,647.12 and 16,155.60 is: 22,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.85 : 39,647.12 = 16,155.60 : x
  2. Step 2: Convert to fraction form
    28,730.85/39,647.12 = 16,155.60/x
  3. Step 3: Cross multiply
    28,730.85x = 39,647.12 × 16,155.60
  4. Step 4: Simplify right side
    28,730.85x = 640,522,931.09
  5. Step 5: Solve for x
    x = 640,522,931.09/28,730.85
  6. Step 6: Final answer
    x = 22,293.91

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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.