Home / 21,162.08-29,203.80-11,730.80

Finding the Fourth Proportional to 21,162.08, 29,203.80 and 11,730.80

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Solution

The fourth proportional to 21,162.08, 29,203.80 and 11,730.80 is: 16,188.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.08 : 29,203.80 = 11,730.80 : x
  2. Step 2: Convert to fraction form
    21,162.08/29,203.80 = 11,730.80/x
  3. Step 3: Cross multiply
    21,162.08x = 29,203.80 × 11,730.80
  4. Step 4: Simplify right side
    21,162.08x = 342,583,937.04
  5. Step 5: Solve for x
    x = 342,583,937.04/21,162.08
  6. Step 6: Final answer
    x = 16,188.58

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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.