Home / 28,688.78-43,035.60-9,963.20

Finding the Fourth Proportional to 28,688.78, 43,035.60 and 9,963.20

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Solution

The fourth proportional to 28,688.78, 43,035.60 and 9,963.20 is: 14,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.78 : 43,035.60 = 9,963.20 : x
  2. Step 2: Convert to fraction form
    28,688.78/43,035.60 = 9,963.20/x
  3. Step 3: Cross multiply
    28,688.78x = 43,035.60 × 9,963.20
  4. Step 4: Simplify right side
    28,688.78x = 428,772,289.92
  5. Step 5: Solve for x
    x = 428,772,289.92/28,688.78
  6. Step 6: Final answer
    x = 14,945.64

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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.