Home / 20,400.46-28,139.70-14,743.54

Finding the Fourth Proportional to 20,400.46, 28,139.70 and 14,743.54

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Solution

The fourth proportional to 20,400.46, 28,139.70 and 14,743.54 is: 20,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.46 : 28,139.70 = 14,743.54 : x
  2. Step 2: Convert to fraction form
    20,400.46/28,139.70 = 14,743.54/x
  3. Step 3: Cross multiply
    20,400.46x = 28,139.70 × 14,743.54
  4. Step 4: Simplify right side
    20,400.46x = 414,878,792.54
  5. Step 5: Solve for x
    x = 414,878,792.54/20,400.46
  6. Step 6: Final answer
    x = 20,336.74

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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.