Home / 28,212.06-38,911.95-20,262.45

Finding the Fourth Proportional to 28,212.06, 38,911.95 and 20,262.45

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Solution

The fourth proportional to 28,212.06, 38,911.95 and 20,262.45 is: 27,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.06 : 38,911.95 = 20,262.45 : x
  2. Step 2: Convert to fraction form
    28,212.06/38,911.95 = 20,262.45/x
  3. Step 3: Cross multiply
    28,212.06x = 38,911.95 × 20,262.45
  4. Step 4: Simplify right side
    28,212.06x = 788,451,441.28
  5. Step 5: Solve for x
    x = 788,451,441.28/28,212.06
  6. Step 6: Final answer
    x = 27,947.32

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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.