Home / 20,959.16-31,563.52-18,902.84

Finding the Fourth Proportional to 20,959.16, 31,563.52 and 18,902.84

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Solution

The fourth proportional to 20,959.16, 31,563.52 and 18,902.84 is: 28,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.16 : 31,563.52 = 18,902.84 : x
  2. Step 2: Convert to fraction form
    20,959.16/31,563.52 = 18,902.84/x
  3. Step 3: Cross multiply
    20,959.16x = 31,563.52 × 18,902.84
  4. Step 4: Simplify right side
    20,959.16x = 596,640,168.40
  5. Step 5: Solve for x
    x = 596,640,168.40/20,959.16
  6. Step 6: Final answer
    x = 28,466.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.