Home / 18,891.09-28,330.65-6,881.76

Finding the Fourth Proportional to 18,891.09, 28,330.65 and 6,881.76

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Solution

The fourth proportional to 18,891.09, 28,330.65 and 6,881.76 is: 10,320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.09 : 28,330.65 = 6,881.76 : x
  2. Step 2: Convert to fraction form
    18,891.09/28,330.65 = 6,881.76/x
  3. Step 3: Cross multiply
    18,891.09x = 28,330.65 × 6,881.76
  4. Step 4: Simplify right side
    18,891.09x = 194,964,733.94
  5. Step 5: Solve for x
    x = 194,964,733.94/18,891.09
  6. Step 6: Final answer
    x = 10,320.46

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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.