Home / 19,818.80-27,343.08-12,749.36

Finding the Fourth Proportional to 19,818.80, 27,343.08 and 12,749.36

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Solution

The fourth proportional to 19,818.80, 27,343.08 and 12,749.36 is: 17,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.80 : 27,343.08 = 12,749.36 : x
  2. Step 2: Convert to fraction form
    19,818.80/27,343.08 = 12,749.36/x
  3. Step 3: Cross multiply
    19,818.80x = 27,343.08 × 12,749.36
  4. Step 4: Simplify right side
    19,818.80x = 348,606,770.43
  5. Step 5: Solve for x
    x = 348,606,770.43/19,818.80
  6. Step 6: Final answer
    x = 17,589.70

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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.