Home / 28,812.36-43,189.36-19,429.32

Finding the Fourth Proportional to 28,812.36, 43,189.36 and 19,429.32

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Solution

The fourth proportional to 28,812.36, 43,189.36 and 19,429.32 is: 29,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.36 : 43,189.36 = 19,429.32 : x
  2. Step 2: Convert to fraction form
    28,812.36/43,189.36 = 19,429.32/x
  3. Step 3: Cross multiply
    28,812.36x = 43,189.36 × 19,429.32
  4. Step 4: Simplify right side
    28,812.36x = 839,139,896.04
  5. Step 5: Solve for x
    x = 839,139,896.04/28,812.36
  6. Step 6: Final answer
    x = 29,124.30

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1.5x scale

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.