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Finding the Fourth Proportional to 28,434.44, 42,661.08 and 8,713.18

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Solution

The fourth proportional to 28,434.44, 42,661.08 and 8,713.18 is: 13,072.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.44 : 42,661.08 = 8,713.18 : x
  2. Step 2: Convert to fraction form
    28,434.44/42,661.08 = 8,713.18/x
  3. Step 3: Cross multiply
    28,434.44x = 42,661.08 × 8,713.18
  4. Step 4: Simplify right side
    28,434.44x = 371,713,669.03
  5. Step 5: Solve for x
    x = 371,713,669.03/28,434.44
  6. Step 6: Final answer
    x = 13,072.66

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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.