Home / 21,681.02-29,920.26-12,249.80

Finding the Fourth Proportional to 21,681.02, 29,920.26 and 12,249.80

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Solution

The fourth proportional to 21,681.02, 29,920.26 and 12,249.80 is: 16,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.02 : 29,920.26 = 12,249.80 : x
  2. Step 2: Convert to fraction form
    21,681.02/29,920.26 = 12,249.80/x
  3. Step 3: Cross multiply
    21,681.02x = 29,920.26 × 12,249.80
  4. Step 4: Simplify right side
    21,681.02x = 366,517,200.95
  5. Step 5: Solve for x
    x = 366,517,200.95/21,681.02
  6. Step 6: Final answer
    x = 16,904.98

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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.