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Finding the Fourth Proportional to 28,986.18, 43,477.77 and 8,209.74

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Solution

The fourth proportional to 28,986.18, 43,477.77 and 8,209.74 is: 12,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.18 : 43,477.77 = 8,209.74 : x
  2. Step 2: Convert to fraction form
    28,986.18/43,477.77 = 8,209.74/x
  3. Step 3: Cross multiply
    28,986.18x = 43,477.77 × 8,209.74
  4. Step 4: Simplify right side
    28,986.18x = 356,941,187.48
  5. Step 5: Solve for x
    x = 356,941,187.48/28,986.18
  6. Step 6: Final answer
    x = 12,314.19

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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.