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Finding the Fourth Proportional to 28,608.96, 42,823.53 and 19,817.22

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Solution

The fourth proportional to 28,608.96, 42,823.53 and 19,817.22 is: 29,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.96 : 42,823.53 = 19,817.22 : x
  2. Step 2: Convert to fraction form
    28,608.96/42,823.53 = 19,817.22/x
  3. Step 3: Cross multiply
    28,608.96x = 42,823.53 × 19,817.22
  4. Step 4: Simplify right side
    28,608.96x = 848,643,315.19
  5. Step 5: Solve for x
    x = 848,643,315.19/28,608.96
  6. Step 6: Final answer
    x = 29,663.55

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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.