Home / 39,775.77-54,890.73-21,870.36

Finding the Fourth Proportional to 39,775.77, 54,890.73 and 21,870.36

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Solution

The fourth proportional to 39,775.77, 54,890.73 and 21,870.36 is: 30,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.77 : 54,890.73 = 21,870.36 : x
  2. Step 2: Convert to fraction form
    39,775.77/54,890.73 = 21,870.36/x
  3. Step 3: Cross multiply
    39,775.77x = 54,890.73 × 21,870.36
  4. Step 4: Simplify right side
    39,775.77x = 1,200,480,025.76
  5. Step 5: Solve for x
    x = 1,200,480,025.76/39,775.77
  6. Step 6: Final answer
    x = 30,181.19

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1.5x scale

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.