Home / 15,129.47-20,974.37-14,329.70

Finding the Fourth Proportional to 15,129.47, 20,974.37 and 14,329.70

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Solution

The fourth proportional to 15,129.47, 20,974.37 and 14,329.70 is: 19,865.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.47 : 20,974.37 = 14,329.70 : x
  2. Step 2: Convert to fraction form
    15,129.47/20,974.37 = 14,329.70/x
  3. Step 3: Cross multiply
    15,129.47x = 20,974.37 × 14,329.70
  4. Step 4: Simplify right side
    15,129.47x = 300,556,518.05
  5. Step 5: Solve for x
    x = 300,556,518.05/15,129.47
  6. Step 6: Final answer
    x = 19,865.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.