Home / 20,731.51-31,075.82-9,629.13

Finding the Fourth Proportional to 20,731.51, 31,075.82 and 9,629.13

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Solution

The fourth proportional to 20,731.51, 31,075.82 and 9,629.13 is: 14,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.51 : 31,075.82 = 9,629.13 : x
  2. Step 2: Convert to fraction form
    20,731.51/31,075.82 = 9,629.13/x
  3. Step 3: Cross multiply
    20,731.51x = 31,075.82 × 9,629.13
  4. Step 4: Simplify right side
    20,731.51x = 299,233,110.64
  5. Step 5: Solve for x
    x = 299,233,110.64/20,731.51
  6. Step 6: Final answer
    x = 14,433.73

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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.