Home / 21,226.19-31,839.29-8,075.48

Finding the Fourth Proportional to 21,226.19, 31,839.29 and 8,075.48

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Solution

The fourth proportional to 21,226.19, 31,839.29 and 8,075.48 is: 12,113.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.19 : 31,839.29 = 8,075.48 : x
  2. Step 2: Convert to fraction form
    21,226.19/31,839.29 = 8,075.48/x
  3. Step 3: Cross multiply
    21,226.19x = 31,839.29 × 8,075.48
  4. Step 4: Simplify right side
    21,226.19x = 257,117,509.23
  5. Step 5: Solve for x
    x = 257,117,509.23/21,226.19
  6. Step 6: Final answer
    x = 12,113.22

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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.