Home / 21,668.23-29,901.59-12,108.20

Finding the Fourth Proportional to 21,668.23, 29,901.59 and 12,108.20

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Solution

The fourth proportional to 21,668.23, 29,901.59 and 12,108.20 is: 16,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.23 : 29,901.59 = 12,108.20 : x
  2. Step 2: Convert to fraction form
    21,668.23/29,901.59 = 12,108.20/x
  3. Step 3: Cross multiply
    21,668.23x = 29,901.59 × 12,108.20
  4. Step 4: Simplify right side
    21,668.23x = 362,054,221.99
  5. Step 5: Solve for x
    x = 362,054,221.99/21,668.23
  6. Step 6: Final answer
    x = 16,708.99

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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.