Home / 20,984.51-28,960.26-11,554.76

Finding the Fourth Proportional to 20,984.51, 28,960.26 and 11,554.76

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Solution

The fourth proportional to 20,984.51, 28,960.26 and 11,554.76 is: 15,946.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.51 : 28,960.26 = 11,554.76 : x
  2. Step 2: Convert to fraction form
    20,984.51/28,960.26 = 11,554.76/x
  3. Step 3: Cross multiply
    20,984.51x = 28,960.26 × 11,554.76
  4. Step 4: Simplify right side
    20,984.51x = 334,628,853.84
  5. Step 5: Solve for x
    x = 334,628,853.84/20,984.51
  6. Step 6: Final answer
    x = 15,946.47

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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.