Home / 28,100.79-38,778.95-16,166.45

Finding the Fourth Proportional to 28,100.79, 38,778.95 and 16,166.45

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Solution

The fourth proportional to 28,100.79, 38,778.95 and 16,166.45 is: 22,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.79 : 38,778.95 = 16,166.45 : x
  2. Step 2: Convert to fraction form
    28,100.79/38,778.95 = 16,166.45/x
  3. Step 3: Cross multiply
    28,100.79x = 38,778.95 × 16,166.45
  4. Step 4: Simplify right side
    28,100.79x = 626,918,093.59
  5. Step 5: Solve for x
    x = 626,918,093.59/28,100.79
  6. Step 6: Final answer
    x = 22,309.63

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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.