Home / 21,893.12-30,210.71-12,329.95

Finding the Fourth Proportional to 21,893.12, 30,210.71 and 12,329.95

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Solution

The fourth proportional to 21,893.12, 30,210.71 and 12,329.95 is: 17,014.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.12 : 30,210.71 = 12,329.95 : x
  2. Step 2: Convert to fraction form
    21,893.12/30,210.71 = 12,329.95/x
  3. Step 3: Cross multiply
    21,893.12x = 30,210.71 × 12,329.95
  4. Step 4: Simplify right side
    21,893.12x = 372,496,463.23
  5. Step 5: Solve for x
    x = 372,496,463.23/21,893.12
  6. Step 6: Final answer
    x = 17,014.32

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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.