Home / 13,870.86-20,784.36-11,261.04

Finding the Fourth Proportional to 13,870.86, 20,784.36 and 11,261.04

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Solution

The fourth proportional to 13,870.86, 20,784.36 and 11,261.04 is: 16,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.86 : 20,784.36 = 11,261.04 : x
  2. Step 2: Convert to fraction form
    13,870.86/20,784.36 = 11,261.04/x
  3. Step 3: Cross multiply
    13,870.86x = 20,784.36 × 11,261.04
  4. Step 4: Simplify right side
    13,870.86x = 234,053,509.33
  5. Step 5: Solve for x
    x = 234,053,509.33/13,870.86
  6. Step 6: Final answer
    x = 16,873.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.