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Finding the Fourth Proportional to 28,713, 43,048.80 and 19,329.84

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Solution

The fourth proportional to 28,713, 43,048.80 and 19,329.84 is: 28,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713 : 43,048.80 = 19,329.84 : x
  2. Step 2: Convert to fraction form
    28,713/43,048.80 = 19,329.84/x
  3. Step 3: Cross multiply
    28,713x = 43,048.80 × 19,329.84
  4. Step 4: Simplify right side
    28,713x = 832,126,416.19
  5. Step 5: Solve for x
    x = 832,126,416.19/28,713
  6. Step 6: Final answer
    x = 28,980.82

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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.