Home / 21,075.75-31,615.52-5,493.51

Finding the Fourth Proportional to 21,075.75, 31,615.52 and 5,493.51

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Solution

The fourth proportional to 21,075.75, 31,615.52 and 5,493.51 is: 8,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.75 : 31,615.52 = 5,493.51 : x
  2. Step 2: Convert to fraction form
    21,075.75/31,615.52 = 5,493.51/x
  3. Step 3: Cross multiply
    21,075.75x = 31,615.52 × 5,493.51
  4. Step 4: Simplify right side
    21,075.75x = 173,680,175.28
  5. Step 5: Solve for x
    x = 173,680,175.28/21,075.75
  6. Step 6: Final answer
    x = 8,240.76

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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.