Home / 20,641.56-28,485.26-11,210.12

Finding the Fourth Proportional to 20,641.56, 28,485.26 and 11,210.12

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Solution

The fourth proportional to 20,641.56, 28,485.26 and 11,210.12 is: 15,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.56 : 28,485.26 = 11,210.12 : x
  2. Step 2: Convert to fraction form
    20,641.56/28,485.26 = 11,210.12/x
  3. Step 3: Cross multiply
    20,641.56x = 28,485.26 × 11,210.12
  4. Step 4: Simplify right side
    20,641.56x = 319,323,197.56
  5. Step 5: Solve for x
    x = 319,323,197.56/20,641.56
  6. Step 6: Final answer
    x = 15,469.92

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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.