Home / 20,869,276.32-28,775,016.72-19,321,541.28

Finding the Fourth Proportional to 20,869,276.32, 28,775,016.72 and 19,321,541.28

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Solution

The fourth proportional to 20,869,276.32, 28,775,016.72 and 19,321,541.28 is: 26,640,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869,276.32 : 28,775,016.72 = 19,321,541.28 : x
  2. Step 2: Convert to fraction form
    20,869,276.32/28,775,016.72 = 19,321,541.28/x
  3. Step 3: Cross multiply
    20,869,276.32x = 28,775,016.72 × 19,321,541.28
  4. Step 4: Simplify right side
    20,869,276.32x = 555,977,673,388,170.19
  5. Step 5: Solve for x
    x = 555,977,673,388,170.19/20,869,276.32
  6. Step 6: Final answer
    x = 26,640,965.64

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Why These Related Problems?

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