Home / 20,681.97-28,541.34-11,250.56

Finding the Fourth Proportional to 20,681.97, 28,541.34 and 11,250.56

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Solution

The fourth proportional to 20,681.97, 28,541.34 and 11,250.56 is: 15,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.97 : 28,541.34 = 11,250.56 : x
  2. Step 2: Convert to fraction form
    20,681.97/28,541.34 = 11,250.56/x
  3. Step 3: Cross multiply
    20,681.97x = 28,541.34 × 11,250.56
  4. Step 4: Simplify right side
    20,681.97x = 321,106,058.15
  5. Step 5: Solve for x
    x = 321,106,058.15/20,681.97
  6. Step 6: Final answer
    x = 15,525.89

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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.