Home / 21,180.11-31,744.50-11,810.16

Finding the Fourth Proportional to 21,180.11, 31,744.50 and 11,810.16

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Solution

The fourth proportional to 21,180.11, 31,744.50 and 11,810.16 is: 17,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.11 : 31,744.50 = 11,810.16 : x
  2. Step 2: Convert to fraction form
    21,180.11/31,744.50 = 11,810.16/x
  3. Step 3: Cross multiply
    21,180.11x = 31,744.50 × 11,810.16
  4. Step 4: Simplify right side
    21,180.11x = 374,907,624.12
  5. Step 5: Solve for x
    x = 374,907,624.12/21,180.11
  6. Step 6: Final answer
    x = 17,700.93

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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.