Home / 21,289.14-31,950.72-9,603.27

Finding the Fourth Proportional to 21,289.14, 31,950.72 and 9,603.27

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Solution

The fourth proportional to 21,289.14, 31,950.72 and 9,603.27 is: 14,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.14 : 31,950.72 = 9,603.27 : x
  2. Step 2: Convert to fraction form
    21,289.14/31,950.72 = 9,603.27/x
  3. Step 3: Cross multiply
    21,289.14x = 31,950.72 × 9,603.27
  4. Step 4: Simplify right side
    21,289.14x = 306,831,390.85
  5. Step 5: Solve for x
    x = 306,831,390.85/21,289.14
  6. Step 6: Final answer
    x = 14,412.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.