Home / 20,706.10-28,573.56-11,274.64

Finding the Fourth Proportional to 20,706.10, 28,573.56 and 11,274.64

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Solution

The fourth proportional to 20,706.10, 28,573.56 and 11,274.64 is: 15,558.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.10 : 28,573.56 = 11,274.64 : x
  2. Step 2: Convert to fraction form
    20,706.10/28,573.56 = 11,274.64/x
  3. Step 3: Cross multiply
    20,706.10x = 28,573.56 × 11,274.64
  4. Step 4: Simplify right side
    20,706.10x = 322,156,602.52
  5. Step 5: Solve for x
    x = 322,156,602.52/20,706.10
  6. Step 6: Final answer
    x = 15,558.54

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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.