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Finding the Fourth Proportional to 28,537.56, 42,810.93 and 8,811.50

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Solution

The fourth proportional to 28,537.56, 42,810.93 and 8,811.50 is: 13,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.56 : 42,810.93 = 8,811.50 : x
  2. Step 2: Convert to fraction form
    28,537.56/42,810.93 = 8,811.50/x
  3. Step 3: Cross multiply
    28,537.56x = 42,810.93 × 8,811.50
  4. Step 4: Simplify right side
    28,537.56x = 377,228,295.64
  5. Step 5: Solve for x
    x = 377,228,295.64/28,537.56
  6. Step 6: Final answer
    x = 13,218.66

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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.