Home / 21,230.77-31,851.62-8,075.97

Finding the Fourth Proportional to 21,230.77, 31,851.62 and 8,075.97

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Solution

The fourth proportional to 21,230.77, 31,851.62 and 8,075.97 is: 12,116.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.77 : 31,851.62 = 8,075.97 : x
  2. Step 2: Convert to fraction form
    21,230.77/31,851.62 = 8,075.97/x
  3. Step 3: Cross multiply
    21,230.77x = 31,851.62 × 8,075.97
  4. Step 4: Simplify right side
    21,230.77x = 257,232,727.57
  5. Step 5: Solve for x
    x = 257,232,727.57/21,230.77
  6. Step 6: Final answer
    x = 12,116.03

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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.