Home / 20,880.52-28,638.71-19,750.84

Finding the Fourth Proportional to 20,880.52, 28,638.71 and 19,750.84

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Solution

The fourth proportional to 20,880.52, 28,638.71 and 19,750.84 is: 27,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.52 : 28,638.71 = 19,750.84 : x
  2. Step 2: Convert to fraction form
    20,880.52/28,638.71 = 19,750.84/x
  3. Step 3: Cross multiply
    20,880.52x = 28,638.71 × 19,750.84
  4. Step 4: Simplify right side
    20,880.52x = 565,638,579.02
  5. Step 5: Solve for x
    x = 565,638,579.02/20,880.52
  6. Step 6: Final answer
    x = 27,089.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.