Home / 20,964.51-28,930.77-11,532.87

Finding the Fourth Proportional to 20,964.51, 28,930.77 and 11,532.87

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Solution

The fourth proportional to 20,964.51, 28,930.77 and 11,532.87 is: 15,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.51 : 28,930.77 = 11,532.87 : x
  2. Step 2: Convert to fraction form
    20,964.51/28,930.77 = 11,532.87/x
  3. Step 3: Cross multiply
    20,964.51x = 28,930.77 × 11,532.87
  4. Step 4: Simplify right side
    20,964.51x = 333,654,809.41
  5. Step 5: Solve for x
    x = 333,654,809.41/20,964.51
  6. Step 6: Final answer
    x = 15,915.22

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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.