Home / 20,485.45-28,277.86-16,010.65

Finding the Fourth Proportional to 20,485.45, 28,277.86 and 16,010.65

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Solution

The fourth proportional to 20,485.45, 28,277.86 and 16,010.65 is: 22,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.45 : 28,277.86 = 16,010.65 : x
  2. Step 2: Convert to fraction form
    20,485.45/28,277.86 = 16,010.65/x
  3. Step 3: Cross multiply
    20,485.45x = 28,277.86 × 16,010.65
  4. Step 4: Simplify right side
    20,485.45x = 452,746,785.49
  5. Step 5: Solve for x
    x = 452,746,785.49/20,485.45
  6. Step 6: Final answer
    x = 22,100.89

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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.