Home / 21,271.14-31,900.84-11,262.31

Finding the Fourth Proportional to 21,271.14, 31,900.84 and 11,262.31

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Solution

The fourth proportional to 21,271.14, 31,900.84 and 11,262.31 is: 16,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.14 : 31,900.84 = 11,262.31 : x
  2. Step 2: Convert to fraction form
    21,271.14/31,900.84 = 11,262.31/x
  3. Step 3: Cross multiply
    21,271.14x = 31,900.84 × 11,262.31
  4. Step 4: Simplify right side
    21,271.14x = 359,277,041.43
  5. Step 5: Solve for x
    x = 359,277,041.43/21,271.14
  6. Step 6: Final answer
    x = 16,890.35

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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.