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Finding the Fourth Proportional to 28,947.56, 43,421.35 and 7,059.56

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Solution

The fourth proportional to 28,947.56, 43,421.35 and 7,059.56 is: 10,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.56 : 43,421.35 = 7,059.56 : x
  2. Step 2: Convert to fraction form
    28,947.56/43,421.35 = 7,059.56/x
  3. Step 3: Cross multiply
    28,947.56x = 43,421.35 × 7,059.56
  4. Step 4: Simplify right side
    28,947.56x = 306,535,716.51
  5. Step 5: Solve for x
    x = 306,535,716.51/28,947.56
  6. Step 6: Final answer
    x = 10,589.34

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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.