Home / 20,635.58-28,477.08-11,561.02

Finding the Fourth Proportional to 20,635.58, 28,477.08 and 11,561.02

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Solution

The fourth proportional to 20,635.58, 28,477.08 and 11,561.02 is: 15,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.58 : 28,477.08 = 11,561.02 : x
  2. Step 2: Convert to fraction form
    20,635.58/28,477.08 = 11,561.02/x
  3. Step 3: Cross multiply
    20,635.58x = 28,477.08 × 11,561.02
  4. Step 4: Simplify right side
    20,635.58x = 329,224,091.42
  5. Step 5: Solve for x
    x = 329,224,091.42/20,635.58
  6. Step 6: Final answer
    x = 15,954.20

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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.