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Finding the Fourth Proportional to 15,365.93, 21,205.01 and 8,651.54

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Solution

The fourth proportional to 15,365.93, 21,205.01 and 8,651.54 is: 11,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.93 : 21,205.01 = 8,651.54 : x
  2. Step 2: Convert to fraction form
    15,365.93/21,205.01 = 8,651.54/x
  3. Step 3: Cross multiply
    15,365.93x = 21,205.01 × 8,651.54
  4. Step 4: Simplify right side
    15,365.93x = 183,456,066.86
  5. Step 5: Solve for x
    x = 183,456,066.86/15,365.93
  6. Step 6: Final answer
    x = 11,939.15

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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.