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Finding the Fourth Proportional to 28,383.60, 42,594.60 and 15,903.60

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Solution

The fourth proportional to 28,383.60, 42,594.60 and 15,903.60 is: 23,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.60 : 42,594.60 = 15,903.60 : x
  2. Step 2: Convert to fraction form
    28,383.60/42,594.60 = 15,903.60/x
  3. Step 3: Cross multiply
    28,383.60x = 42,594.60 × 15,903.60
  4. Step 4: Simplify right side
    28,383.60x = 677,407,480.56
  5. Step 5: Solve for x
    x = 677,407,480.56/28,383.60
  6. Step 6: Final answer
    x = 23,866.16

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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.