Home / 28,936.60-43,394.10-20,145.40

Finding the Fourth Proportional to 28,936.60, 43,394.10 and 20,145.40

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Solution

The fourth proportional to 28,936.60, 43,394.10 and 20,145.40 is: 30,210.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.60 : 43,394.10 = 20,145.40 : x
  2. Step 2: Convert to fraction form
    28,936.60/43,394.10 = 20,145.40/x
  3. Step 3: Cross multiply
    28,936.60x = 43,394.10 × 20,145.40
  4. Step 4: Simplify right side
    28,936.60x = 874,191,502.14
  5. Step 5: Solve for x
    x = 874,191,502.14/28,936.60
  6. Step 6: Final answer
    x = 30,210.58

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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.