Home / 13,607.12-20,415.23-5,287.41

Finding the Fourth Proportional to 13,607.12, 20,415.23 and 5,287.41

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Solution

The fourth proportional to 13,607.12, 20,415.23 and 5,287.41 is: 7,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.12 : 20,415.23 = 5,287.41 : x
  2. Step 2: Convert to fraction form
    13,607.12/20,415.23 = 5,287.41/x
  3. Step 3: Cross multiply
    13,607.12x = 20,415.23 × 5,287.41
  4. Step 4: Simplify right side
    13,607.12x = 107,943,562.74
  5. Step 5: Solve for x
    x = 107,943,562.74/13,607.12
  6. Step 6: Final answer
    x = 7,932.88

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1.5x scale

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.