Home / 20,984.84-28,959.90-11,554.28

Finding the Fourth Proportional to 20,984.84, 28,959.90 and 11,554.28

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Solution

The fourth proportional to 20,984.84, 28,959.90 and 11,554.28 is: 15,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.84 : 28,959.90 = 11,554.28 : x
  2. Step 2: Convert to fraction form
    20,984.84/28,959.90 = 11,554.28/x
  3. Step 3: Cross multiply
    20,984.84x = 28,959.90 × 11,554.28
  4. Step 4: Simplify right side
    20,984.84x = 334,610,793.37
  5. Step 5: Solve for x
    x = 334,610,793.37/20,984.84
  6. Step 6: Final answer
    x = 15,945.36

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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.