Home / 20,479.19-28,261.35-11,526.83

Finding the Fourth Proportional to 20,479.19, 28,261.35 and 11,526.83

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Solution

The fourth proportional to 20,479.19, 28,261.35 and 11,526.83 is: 15,907.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.19 : 28,261.35 = 11,526.83 : x
  2. Step 2: Convert to fraction form
    20,479.19/28,261.35 = 11,526.83/x
  3. Step 3: Cross multiply
    20,479.19x = 28,261.35 × 11,526.83
  4. Step 4: Simplify right side
    20,479.19x = 325,763,719.39
  5. Step 5: Solve for x
    x = 325,763,719.39/20,479.19
  6. Step 6: Final answer
    x = 15,907.06

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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.