Home / 28,865.50-43,302.32-9,145.60

Finding the Fourth Proportional to 28,865.50, 43,302.32 and 9,145.60

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Solution

The fourth proportional to 28,865.50, 43,302.32 and 9,145.60 is: 13,719.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.50 : 43,302.32 = 9,145.60 : x
  2. Step 2: Convert to fraction form
    28,865.50/43,302.32 = 9,145.60/x
  3. Step 3: Cross multiply
    28,865.50x = 43,302.32 × 9,145.60
  4. Step 4: Simplify right side
    28,865.50x = 396,025,697.79
  5. Step 5: Solve for x
    x = 396,025,697.79/28,865.50
  6. Step 6: Final answer
    x = 13,719.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.