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Finding the Fourth Proportional to 28,050, 38,709 and 15,475.56

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Solution

The fourth proportional to 28,050, 38,709 and 15,475.56 is: 21,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,050 : 38,709 = 15,475.56 : x
  2. Step 2: Convert to fraction form
    28,050/38,709 = 15,475.56/x
  3. Step 3: Cross multiply
    28,050x = 38,709 × 15,475.56
  4. Step 4: Simplify right side
    28,050x = 599,043,452.04
  5. Step 5: Solve for x
    x = 599,043,452.04/28,050
  6. Step 6: Final answer
    x = 21,356.27

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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.