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Finding the Fourth Proportional to 28,904.70, 43,357.05 and 13,352.70

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Solution

The fourth proportional to 28,904.70, 43,357.05 and 13,352.70 is: 20,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.70 : 43,357.05 = 13,352.70 : x
  2. Step 2: Convert to fraction form
    28,904.70/43,357.05 = 13,352.70/x
  3. Step 3: Cross multiply
    28,904.70x = 43,357.05 × 13,352.70
  4. Step 4: Simplify right side
    28,904.70x = 578,933,681.54
  5. Step 5: Solve for x
    x = 578,933,681.54/28,904.70
  6. Step 6: Final answer
    x = 20,029.05

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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.