Home / 13,395.21-18,485.06-7,426.86

Finding the Fourth Proportional to 13,395.21, 18,485.06 and 7,426.86

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Solution

The fourth proportional to 13,395.21, 18,485.06 and 7,426.86 is: 10,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.21 : 18,485.06 = 7,426.86 : x
  2. Step 2: Convert to fraction form
    13,395.21/18,485.06 = 7,426.86/x
  3. Step 3: Cross multiply
    13,395.21x = 18,485.06 × 7,426.86
  4. Step 4: Simplify right side
    13,395.21x = 137,285,915.58
  5. Step 5: Solve for x
    x = 137,285,915.58/13,395.21
  6. Step 6: Final answer
    x = 10,248.88

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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.