Home / 21,140.46-31,674.08-11,130.40

Finding the Fourth Proportional to 21,140.46, 31,674.08 and 11,130.40

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Solution

The fourth proportional to 21,140.46, 31,674.08 and 11,130.40 is: 16,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.46 : 31,674.08 = 11,130.40 : x
  2. Step 2: Convert to fraction form
    21,140.46/31,674.08 = 11,130.40/x
  3. Step 3: Cross multiply
    21,140.46x = 31,674.08 × 11,130.40
  4. Step 4: Simplify right side
    21,140.46x = 352,545,180.03
  5. Step 5: Solve for x
    x = 352,545,180.03/21,140.46
  6. Step 6: Final answer
    x = 16,676.32

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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.