Home / 18,428.31-25,424.60-14,180.67

Finding the Fourth Proportional to 18,428.31, 25,424.60 and 14,180.67

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Solution

The fourth proportional to 18,428.31, 25,424.60 and 14,180.67 is: 19,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.31 : 25,424.60 = 14,180.67 : x
  2. Step 2: Convert to fraction form
    18,428.31/25,424.60 = 14,180.67/x
  3. Step 3: Cross multiply
    18,428.31x = 25,424.60 × 14,180.67
  4. Step 4: Simplify right side
    18,428.31x = 360,537,791.58
  5. Step 5: Solve for x
    x = 360,537,791.58/18,428.31
  6. Step 6: Final answer
    x = 19,564.34

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Half scale
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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.