Home / 13,710.40-20,565.60-3,851.35

Finding the Fourth Proportional to 13,710.40, 20,565.60 and 3,851.35

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Solution

The fourth proportional to 13,710.40, 20,565.60 and 3,851.35 is: 5,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.40 : 20,565.60 = 3,851.35 : x
  2. Step 2: Convert to fraction form
    13,710.40/20,565.60 = 3,851.35/x
  3. Step 3: Cross multiply
    13,710.40x = 20,565.60 × 3,851.35
  4. Step 4: Simplify right side
    13,710.40x = 79,205,323.56
  5. Step 5: Solve for x
    x = 79,205,323.56/13,710.40
  6. Step 6: Final answer
    x = 5,777.03

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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.