Home / 39,271.40-54,195.20-21,366.70

Finding the Fourth Proportional to 39,271.40, 54,195.20 and 21,366.70

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Solution

The fourth proportional to 39,271.40, 54,195.20 and 21,366.70 is: 29,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,271.40 : 54,195.20 = 21,366.70 : x
  2. Step 2: Convert to fraction form
    39,271.40/54,195.20 = 21,366.70/x
  3. Step 3: Cross multiply
    39,271.40x = 54,195.20 × 21,366.70
  4. Step 4: Simplify right side
    39,271.40x = 1,157,972,579.84
  5. Step 5: Solve for x
    x = 1,157,972,579.84/39,271.40
  6. Step 6: Final answer
    x = 29,486.41

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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.