Home / 13,122.28-19,681.74-3,887.56

Finding the Fourth Proportional to 13,122.28, 19,681.74 and 3,887.56

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Solution

The fourth proportional to 13,122.28, 19,681.74 and 3,887.56 is: 5,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.28 : 19,681.74 = 3,887.56 : x
  2. Step 2: Convert to fraction form
    13,122.28/19,681.74 = 3,887.56/x
  3. Step 3: Cross multiply
    13,122.28x = 19,681.74 × 3,887.56
  4. Step 4: Simplify right side
    13,122.28x = 76,513,945.15
  5. Step 5: Solve for x
    x = 76,513,945.15/13,122.28
  6. Step 6: Final answer
    x = 5,830.84

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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.