Home / 21,407.63-29,543.36-11,976.20

Finding the Fourth Proportional to 21,407.63, 29,543.36 and 11,976.20

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Solution

The fourth proportional to 21,407.63, 29,543.36 and 11,976.20 is: 16,527.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.63 : 29,543.36 = 11,976.20 : x
  2. Step 2: Convert to fraction form
    21,407.63/29,543.36 = 11,976.20/x
  3. Step 3: Cross multiply
    21,407.63x = 29,543.36 × 11,976.20
  4. Step 4: Simplify right side
    21,407.63x = 353,816,980.43
  5. Step 5: Solve for x
    x = 353,816,980.43/21,407.63
  6. Step 6: Final answer
    x = 16,527.61

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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.