Home / 28,157-38,856.66-15,583.64

Finding the Fourth Proportional to 28,157, 38,856.66 and 15,583.64

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Solution

The fourth proportional to 28,157, 38,856.66 and 15,583.64 is: 21,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157 : 38,856.66 = 15,583.64 : x
  2. Step 2: Convert to fraction form
    28,157/38,856.66 = 15,583.64/x
  3. Step 3: Cross multiply
    28,157x = 38,856.66 × 15,583.64
  4. Step 4: Simplify right side
    28,157x = 605,528,201.04
  5. Step 5: Solve for x
    x = 605,528,201.04/28,157
  6. Step 6: Final answer
    x = 21,505.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.