Home / 28,065.14-38,719.74-21,606.76

Finding the Fourth Proportional to 28,065.14, 38,719.74 and 21,606.76

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Solution

The fourth proportional to 28,065.14, 38,719.74 and 21,606.76 is: 29,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.14 : 38,719.74 = 21,606.76 : x
  2. Step 2: Convert to fraction form
    28,065.14/38,719.74 = 21,606.76/x
  3. Step 3: Cross multiply
    28,065.14x = 38,719.74 × 21,606.76
  4. Step 4: Simplify right side
    28,065.14x = 836,608,129.44
  5. Step 5: Solve for x
    x = 836,608,129.44/28,065.14
  6. Step 6: Final answer
    x = 29,809.51

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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.