Home / 21,726.86-29,983.78-12,295.22

Finding the Fourth Proportional to 21,726.86, 29,983.78 and 12,295.22

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Solution

The fourth proportional to 21,726.86, 29,983.78 and 12,295.22 is: 16,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.86 : 29,983.78 = 12,295.22 : x
  2. Step 2: Convert to fraction form
    21,726.86/29,983.78 = 12,295.22/x
  3. Step 3: Cross multiply
    21,726.86x = 29,983.78 × 12,295.22
  4. Step 4: Simplify right side
    21,726.86x = 368,657,171.53
  5. Step 5: Solve for x
    x = 368,657,171.53/21,726.86
  6. Step 6: Final answer
    x = 16,967.81

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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.