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Finding the Fourth Proportional to 28,647.98, 42,945.99 and 15,484.97

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Solution

The fourth proportional to 28,647.98, 42,945.99 and 15,484.97 is: 23,213.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.98 : 42,945.99 = 15,484.97 : x
  2. Step 2: Convert to fraction form
    28,647.98/42,945.99 = 15,484.97/x
  3. Step 3: Cross multiply
    28,647.98x = 42,945.99 × 15,484.97
  4. Step 4: Simplify right side
    28,647.98x = 665,017,366.77
  5. Step 5: Solve for x
    x = 665,017,366.77/28,647.98
  6. Step 6: Final answer
    x = 23,213.41

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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.