Home / 39,774.54-54,889.74-21,870.71

Finding the Fourth Proportional to 39,774.54, 54,889.74 and 21,870.71

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Solution

The fourth proportional to 39,774.54, 54,889.74 and 21,870.71 is: 30,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.54 : 54,889.74 = 21,870.71 : x
  2. Step 2: Convert to fraction form
    39,774.54/54,889.74 = 21,870.71/x
  3. Step 3: Cross multiply
    39,774.54x = 54,889.74 × 21,870.71
  4. Step 4: Simplify right side
    39,774.54x = 1,200,477,201.71
  5. Step 5: Solve for x
    x = 1,200,477,201.71/39,774.54
  6. Step 6: Final answer
    x = 30,182.05

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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.