Home / 39,733.40-54,830.88-21,828.20

Finding the Fourth Proportional to 39,733.40, 54,830.88 and 21,828.20

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Solution

The fourth proportional to 39,733.40, 54,830.88 and 21,828.20 is: 30,122.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,733.40 : 54,830.88 = 21,828.20 : x
  2. Step 2: Convert to fraction form
    39,733.40/54,830.88 = 21,828.20/x
  3. Step 3: Cross multiply
    39,733.40x = 54,830.88 × 21,828.20
  4. Step 4: Simplify right side
    39,733.40x = 1,196,859,414.82
  5. Step 5: Solve for x
    x = 1,196,859,414.82/39,733.40
  6. Step 6: Final answer
    x = 30,122.25

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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.