Home / 20,735.50-28,618.74-12,237.10

Finding the Fourth Proportional to 20,735.50, 28,618.74 and 12,237.10

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Solution

The fourth proportional to 20,735.50, 28,618.74 and 12,237.10 is: 16,889.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.50 : 28,618.74 = 12,237.10 : x
  2. Step 2: Convert to fraction form
    20,735.50/28,618.74 = 12,237.10/x
  3. Step 3: Cross multiply
    20,735.50x = 28,618.74 × 12,237.10
  4. Step 4: Simplify right side
    20,735.50x = 350,210,383.25
  5. Step 5: Solve for x
    x = 350,210,383.25/20,735.50
  6. Step 6: Final answer
    x = 16,889.41

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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.