Home / 12,564.87-18,817.20-7,004.40

Finding the Fourth Proportional to 12,564.87, 18,817.20 and 7,004.40

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Solution

The fourth proportional to 12,564.87, 18,817.20 and 7,004.40 is: 10,489.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,564.87 : 18,817.20 = 7,004.40 : x
  2. Step 2: Convert to fraction form
    12,564.87/18,817.20 = 7,004.40/x
  3. Step 3: Cross multiply
    12,564.87x = 18,817.20 × 7,004.40
  4. Step 4: Simplify right side
    12,564.87x = 131,803,195.68
  5. Step 5: Solve for x
    x = 131,803,195.68/12,564.87
  6. Step 6: Final answer
    x = 10,489.82

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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.