Home / 28,101.81-38,777.18-16,769.21

Finding the Fourth Proportional to 28,101.81, 38,777.18 and 16,769.21

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Solution

The fourth proportional to 28,101.81, 38,777.18 and 16,769.21 is: 23,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.81 : 38,777.18 = 16,769.21 : x
  2. Step 2: Convert to fraction form
    28,101.81/38,777.18 = 16,769.21/x
  3. Step 3: Cross multiply
    28,101.81x = 38,777.18 × 16,769.21
  4. Step 4: Simplify right side
    28,101.81x = 650,262,674.63
  5. Step 5: Solve for x
    x = 650,262,674.63/28,101.81
  6. Step 6: Final answer
    x = 23,139.53

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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.