Home / 13,598.70-20,395.59-8,653.64

Finding the Fourth Proportional to 13,598.70, 20,395.59 and 8,653.64

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Solution

The fourth proportional to 13,598.70, 20,395.59 and 8,653.64 is: 12,978.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.70 : 20,395.59 = 8,653.64 : x
  2. Step 2: Convert to fraction form
    13,598.70/20,395.59 = 8,653.64/x
  3. Step 3: Cross multiply
    13,598.70x = 20,395.59 × 8,653.64
  4. Step 4: Simplify right side
    13,598.70x = 176,496,093.45
  5. Step 5: Solve for x
    x = 176,496,093.45/13,598.70
  6. Step 6: Final answer
    x = 12,978.89

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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.