Home / 21,159.08-29,198.85-11,727.98

Finding the Fourth Proportional to 21,159.08, 29,198.85 and 11,727.98

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Solution

The fourth proportional to 21,159.08, 29,198.85 and 11,727.98 is: 16,184.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.08 : 29,198.85 = 11,727.98 : x
  2. Step 2: Convert to fraction form
    21,159.08/29,198.85 = 11,727.98/x
  3. Step 3: Cross multiply
    21,159.08x = 29,198.85 × 11,727.98
  4. Step 4: Simplify right side
    21,159.08x = 342,443,528.82
  5. Step 5: Solve for x
    x = 342,443,528.82/21,159.08
  6. Step 6: Final answer
    x = 16,184.24

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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.