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Finding the Fourth Proportional to 28,480.78, 39,018.02 and 27,415.93

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Solution

The fourth proportional to 28,480.78, 39,018.02 and 27,415.93 is: 37,559.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.78 : 39,018.02 = 27,415.93 : x
  2. Step 2: Convert to fraction form
    28,480.78/39,018.02 = 27,415.93/x
  3. Step 3: Cross multiply
    28,480.78x = 39,018.02 × 27,415.93
  4. Step 4: Simplify right side
    28,480.78x = 1,069,714,972.89
  5. Step 5: Solve for x
    x = 1,069,714,972.89/28,480.78
  6. Step 6: Final answer
    x = 37,559.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.