Home / 20,211.68-27,891.60-19,615.52

Finding the Fourth Proportional to 20,211.68, 27,891.60 and 19,615.52

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Solution

The fourth proportional to 20,211.68, 27,891.60 and 19,615.52 is: 27,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.68 : 27,891.60 = 19,615.52 : x
  2. Step 2: Convert to fraction form
    20,211.68/27,891.60 = 19,615.52/x
  3. Step 3: Cross multiply
    20,211.68x = 27,891.60 × 19,615.52
  4. Step 4: Simplify right side
    20,211.68x = 547,108,237.63
  5. Step 5: Solve for x
    x = 547,108,237.63/20,211.68
  6. Step 6: Final answer
    x = 27,068.91

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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.