Home / 19,771.40-27,284.30-10,818.80

Finding the Fourth Proportional to 19,771.40, 27,284.30 and 10,818.80

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Solution

The fourth proportional to 19,771.40, 27,284.30 and 10,818.80 is: 14,929.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.40 : 27,284.30 = 10,818.80 : x
  2. Step 2: Convert to fraction form
    19,771.40/27,284.30 = 10,818.80/x
  3. Step 3: Cross multiply
    19,771.40x = 27,284.30 × 10,818.80
  4. Step 4: Simplify right side
    19,771.40x = 295,183,384.84
  5. Step 5: Solve for x
    x = 295,183,384.84/19,771.40
  6. Step 6: Final answer
    x = 14,929.82

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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.