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Finding the Fourth Proportional to 28,376.64, 42,564.96 and 7,600.32

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Solution

The fourth proportional to 28,376.64, 42,564.96 and 7,600.32 is: 11,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.64 : 42,564.96 = 7,600.32 : x
  2. Step 2: Convert to fraction form
    28,376.64/42,564.96 = 7,600.32/x
  3. Step 3: Cross multiply
    28,376.64x = 42,564.96 × 7,600.32
  4. Step 4: Simplify right side
    28,376.64x = 323,507,316.79
  5. Step 5: Solve for x
    x = 323,507,316.79/28,376.64
  6. Step 6: Final answer
    x = 11,400.48

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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.