Home / 21,162.07-29,203.59-11,730.61

Finding the Fourth Proportional to 21,162.07, 29,203.59 and 11,730.61

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Solution

The fourth proportional to 21,162.07, 29,203.59 and 11,730.61 is: 16,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.07 : 29,203.59 = 11,730.61 : x
  2. Step 2: Convert to fraction form
    21,162.07/29,203.59 = 11,730.61/x
  3. Step 3: Cross multiply
    21,162.07x = 29,203.59 × 11,730.61
  4. Step 4: Simplify right side
    21,162.07x = 342,575,924.89
  5. Step 5: Solve for x
    x = 342,575,924.89/21,162.07
  6. Step 6: Final answer
    x = 16,188.20

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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.