Home / 20,458.40-28,211.60-14,488.48

Finding the Fourth Proportional to 20,458.40, 28,211.60 and 14,488.48

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Solution

The fourth proportional to 20,458.40, 28,211.60 and 14,488.48 is: 19,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.40 : 28,211.60 = 14,488.48 : x
  2. Step 2: Convert to fraction form
    20,458.40/28,211.60 = 14,488.48/x
  3. Step 3: Cross multiply
    20,458.40x = 28,211.60 × 14,488.48
  4. Step 4: Simplify right side
    20,458.40x = 408,743,202.37
  5. Step 5: Solve for x
    x = 408,743,202.37/20,458.40
  6. Step 6: Final answer
    x = 19,979.24

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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.