Home / 13,563.20-18,716.70-7,897.64

Finding the Fourth Proportional to 13,563.20, 18,716.70 and 7,897.64

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Solution

The fourth proportional to 13,563.20, 18,716.70 and 7,897.64 is: 10,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.20 : 18,716.70 = 7,897.64 : x
  2. Step 2: Convert to fraction form
    13,563.20/18,716.70 = 7,897.64/x
  3. Step 3: Cross multiply
    13,563.20x = 18,716.70 × 7,897.64
  4. Step 4: Simplify right side
    13,563.20x = 147,817,758.59
  5. Step 5: Solve for x
    x = 147,817,758.59/13,563.20
  6. Step 6: Final answer
    x = 10,898.44

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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.