Home / 20,912.49-28,852.17-11,953.65

Finding the Fourth Proportional to 20,912.49, 28,852.17 and 11,953.65

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Solution

The fourth proportional to 20,912.49, 28,852.17 and 11,953.65 is: 16,492.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.49 : 28,852.17 = 11,953.65 : x
  2. Step 2: Convert to fraction form
    20,912.49/28,852.17 = 11,953.65/x
  3. Step 3: Cross multiply
    20,912.49x = 28,852.17 × 11,953.65
  4. Step 4: Simplify right side
    20,912.49x = 344,888,805.29
  5. Step 5: Solve for x
    x = 344,888,805.29/20,912.49
  6. Step 6: Final answer
    x = 16,492.00

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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.