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Finding the Fourth Proportional to 28,562.60, 42,843.90 and 13,010.60

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Solution

The fourth proportional to 28,562.60, 42,843.90 and 13,010.60 is: 19,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.60 : 42,843.90 = 13,010.60 : x
  2. Step 2: Convert to fraction form
    28,562.60/42,843.90 = 13,010.60/x
  3. Step 3: Cross multiply
    28,562.60x = 42,843.90 × 13,010.60
  4. Step 4: Simplify right side
    28,562.60x = 557,424,845.34
  5. Step 5: Solve for x
    x = 557,424,845.34/28,562.60
  6. Step 6: Final answer
    x = 19,515.90

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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.