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Finding the Fourth Proportional to 28,005.58, 38,647.40 and 16,070.79

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Solution

The fourth proportional to 28,005.58, 38,647.40 and 16,070.79 is: 22,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.58 : 38,647.40 = 16,070.79 : x
  2. Step 2: Convert to fraction form
    28,005.58/38,647.40 = 16,070.79/x
  3. Step 3: Cross multiply
    28,005.58x = 38,647.40 × 16,070.79
  4. Step 4: Simplify right side
    28,005.58x = 621,094,249.45
  5. Step 5: Solve for x
    x = 621,094,249.45/28,005.58
  6. Step 6: Final answer
    x = 22,177.52

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