Home / 20,495.40-28,283.37-11,543.79

Finding the Fourth Proportional to 20,495.40, 28,283.37 and 11,543.79

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Solution

The fourth proportional to 20,495.40, 28,283.37 and 11,543.79 is: 15,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.40 : 28,283.37 = 11,543.79 : x
  2. Step 2: Convert to fraction form
    20,495.40/28,283.37 = 11,543.79/x
  3. Step 3: Cross multiply
    20,495.40x = 28,283.37 × 11,543.79
  4. Step 4: Simplify right side
    20,495.40x = 326,497,283.77
  5. Step 5: Solve for x
    x = 326,497,283.77/20,495.40
  6. Step 6: Final answer
    x = 15,930.27

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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.