Home / 21,194.88-31,712.76-13,192.08

Finding the Fourth Proportional to 21,194.88, 31,712.76 and 13,192.08

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Solution

The fourth proportional to 21,194.88, 31,712.76 and 13,192.08 is: 19,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,194.88 : 31,712.76 = 13,192.08 : x
  2. Step 2: Convert to fraction form
    21,194.88/31,712.76 = 13,192.08/x
  3. Step 3: Cross multiply
    21,194.88x = 31,712.76 × 13,192.08
  4. Step 4: Simplify right side
    21,194.88x = 418,357,266.94
  5. Step 5: Solve for x
    x = 418,357,266.94/21,194.88
  6. Step 6: Final answer
    x = 19,738.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.