Home / 20,937.06-28,893.69-11,505.87

Finding the Fourth Proportional to 20,937.06, 28,893.69 and 11,505.87

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Solution

The fourth proportional to 20,937.06, 28,893.69 and 11,505.87 is: 15,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.06 : 28,893.69 = 11,505.87 : x
  2. Step 2: Convert to fraction form
    20,937.06/28,893.69 = 11,505.87/x
  3. Step 3: Cross multiply
    20,937.06x = 28,893.69 × 11,505.87
  4. Step 4: Simplify right side
    20,937.06x = 332,447,040.96
  5. Step 5: Solve for x
    x = 332,447,040.96/20,937.06
  6. Step 6: Final answer
    x = 15,878.40

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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.