Home / 28,608.96-42,913.44-10,128

Finding the Fourth Proportional to 28,608.96, 42,913.44 and 10,128

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Solution

The fourth proportional to 28,608.96, 42,913.44 and 10,128 is: 15,192.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.96 : 42,913.44 = 10,128 : x
  2. Step 2: Convert to fraction form
    28,608.96/42,913.44 = 10,128/x
  3. Step 3: Cross multiply
    28,608.96x = 42,913.44 × 10,128
  4. Step 4: Simplify right side
    28,608.96x = 434,627,320.32
  5. Step 5: Solve for x
    x = 434,627,320.32/28,608.96
  6. Step 6: Final answer
    x = 15,192.00

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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.