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Finding the Fourth Proportional to 28,094.48, 38,767.08 and 15,518.48

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Solution

The fourth proportional to 28,094.48, 38,767.08 and 15,518.48 is: 21,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,094.48 : 38,767.08 = 15,518.48 : x
  2. Step 2: Convert to fraction form
    28,094.48/38,767.08 = 15,518.48/x
  3. Step 3: Cross multiply
    28,094.48x = 38,767.08 × 15,518.48
  4. Step 4: Simplify right side
    28,094.48x = 601,606,155.64
  5. Step 5: Solve for x
    x = 601,606,155.64/28,094.48
  6. Step 6: Final answer
    x = 21,413.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.