Home / 21,761.12-30,030.32-12,329.68

Finding the Fourth Proportional to 21,761.12, 30,030.32 and 12,329.68

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Solution

The fourth proportional to 21,761.12, 30,030.32 and 12,329.68 is: 17,014.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.12 : 30,030.32 = 12,329.68 : x
  2. Step 2: Convert to fraction form
    21,761.12/30,030.32 = 12,329.68/x
  3. Step 3: Cross multiply
    21,761.12x = 30,030.32 × 12,329.68
  4. Step 4: Simplify right side
    21,761.12x = 370,264,191.65
  5. Step 5: Solve for x
    x = 370,264,191.65/21,761.12
  6. Step 6: Final answer
    x = 17,014.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.