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Finding the Fourth Proportional to 28,948.70, 43,313.70 and 19,107.20

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Solution

The fourth proportional to 28,948.70, 43,313.70 and 19,107.20 is: 28,588.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948.70 : 43,313.70 = 19,107.20 : x
  2. Step 2: Convert to fraction form
    28,948.70/43,313.70 = 19,107.20/x
  3. Step 3: Cross multiply
    28,948.70x = 43,313.70 × 19,107.20
  4. Step 4: Simplify right side
    28,948.70x = 827,603,528.64
  5. Step 5: Solve for x
    x = 827,603,528.64/28,948.70
  6. Step 6: Final answer
    x = 28,588.63

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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.