Home / 20,995.74-28,973.88-11,564.10

Finding the Fourth Proportional to 20,995.74, 28,973.88 and 11,564.10

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Solution

The fourth proportional to 20,995.74, 28,973.88 and 11,564.10 is: 15,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.74 : 28,973.88 = 11,564.10 : x
  2. Step 2: Convert to fraction form
    20,995.74/28,973.88 = 11,564.10/x
  3. Step 3: Cross multiply
    20,995.74x = 28,973.88 × 11,564.10
  4. Step 4: Simplify right side
    20,995.74x = 335,056,845.71
  5. Step 5: Solve for x
    x = 335,056,845.71/20,995.74
  6. Step 6: Final answer
    x = 15,958.33

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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.