Home / 10,135.41-13,987.26-5,660.30

Finding the Fourth Proportional to 10,135.41, 13,987.26 and 5,660.30

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Solution

The fourth proportional to 10,135.41, 13,987.26 and 5,660.30 is: 7,811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.41 : 13,987.26 = 5,660.30 : x
  2. Step 2: Convert to fraction form
    10,135.41/13,987.26 = 5,660.30/x
  3. Step 3: Cross multiply
    10,135.41x = 13,987.26 × 5,660.30
  4. Step 4: Simplify right side
    10,135.41x = 79,172,017.84
  5. Step 5: Solve for x
    x = 79,172,017.84/10,135.41
  6. Step 6: Final answer
    x = 7,811.43

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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.