Home / 28,917.90-43,340.40-25,783.20

Finding the Fourth Proportional to 28,917.90, 43,340.40 and 25,783.20

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Solution

The fourth proportional to 28,917.90, 43,340.40 and 25,783.20 is: 38,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.90 : 43,340.40 = 25,783.20 : x
  2. Step 2: Convert to fraction form
    28,917.90/43,340.40 = 25,783.20/x
  3. Step 3: Cross multiply
    28,917.90x = 43,340.40 × 25,783.20
  4. Step 4: Simplify right side
    28,917.90x = 1,117,454,201.28
  5. Step 5: Solve for x
    x = 1,117,454,201.28/28,917.90
  6. Step 6: Final answer
    x = 38,642.30

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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.