Home / 20,815.77-31,242.80-14,976.48

Finding the Fourth Proportional to 20,815.77, 31,242.80 and 14,976.48

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Solution

The fourth proportional to 20,815.77, 31,242.80 and 14,976.48 is: 22,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815.77 : 31,242.80 = 14,976.48 : x
  2. Step 2: Convert to fraction form
    20,815.77/31,242.80 = 14,976.48/x
  3. Step 3: Cross multiply
    20,815.77x = 31,242.80 × 14,976.48
  4. Step 4: Simplify right side
    20,815.77x = 467,907,169.34
  5. Step 5: Solve for x
    x = 467,907,169.34/20,815.77
  6. Step 6: Final answer
    x = 22,478.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.