Home / 21,161.61-31,763.06-10,075.95

Finding the Fourth Proportional to 21,161.61, 31,763.06 and 10,075.95

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Solution

The fourth proportional to 21,161.61, 31,763.06 and 10,075.95 is: 15,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.61 : 31,763.06 = 10,075.95 : x
  2. Step 2: Convert to fraction form
    21,161.61/31,763.06 = 10,075.95/x
  3. Step 3: Cross multiply
    21,161.61x = 31,763.06 × 10,075.95
  4. Step 4: Simplify right side
    21,161.61x = 320,043,004.41
  5. Step 5: Solve for x
    x = 320,043,004.41/21,161.61
  6. Step 6: Final answer
    x = 15,123.75

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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.