Home / 21,726.63-29,975.76-12,165.11

Finding the Fourth Proportional to 21,726.63, 29,975.76 and 12,165.11

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Solution

The fourth proportional to 21,726.63, 29,975.76 and 12,165.11 is: 16,783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.63 : 29,975.76 = 12,165.11 : x
  2. Step 2: Convert to fraction form
    21,726.63/29,975.76 = 12,165.11/x
  3. Step 3: Cross multiply
    21,726.63x = 29,975.76 × 12,165.11
  4. Step 4: Simplify right side
    21,726.63x = 364,658,267.85
  5. Step 5: Solve for x
    x = 364,658,267.85/21,726.63
  6. Step 6: Final answer
    x = 16,783.93

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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.