Home / 21,250.67-31,846.84-13,445.51

Finding the Fourth Proportional to 21,250.67, 31,846.84 and 13,445.51

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Solution

The fourth proportional to 21,250.67, 31,846.84 and 13,445.51 is: 20,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.67 : 31,846.84 = 13,445.51 : x
  2. Step 2: Convert to fraction form
    21,250.67/31,846.84 = 13,445.51/x
  3. Step 3: Cross multiply
    21,250.67x = 31,846.84 × 13,445.51
  4. Step 4: Simplify right side
    21,250.67x = 428,196,812.84
  5. Step 5: Solve for x
    x = 428,196,812.84/21,250.67
  6. Step 6: Final answer
    x = 20,149.81

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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.