Home / 28,537.60-39,419.51-21,905.18

Finding the Fourth Proportional to 28,537.60, 39,419.51 and 21,905.18

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Solution

The fourth proportional to 28,537.60, 39,419.51 and 21,905.18 is: 30,258.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.60 : 39,419.51 = 21,905.18 : x
  2. Step 2: Convert to fraction form
    28,537.60/39,419.51 = 21,905.18/x
  3. Step 3: Cross multiply
    28,537.60x = 39,419.51 × 21,905.18
  4. Step 4: Simplify right side
    28,537.60x = 863,491,462.06
  5. Step 5: Solve for x
    x = 863,491,462.06/28,537.60
  6. Step 6: Final answer
    x = 30,258.03

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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.