Home / 13,150.28-19,722.47-3,788.21

Finding the Fourth Proportional to 13,150.28, 19,722.47 and 3,788.21

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Solution

The fourth proportional to 13,150.28, 19,722.47 and 3,788.21 is: 5,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.28 : 19,722.47 = 3,788.21 : x
  2. Step 2: Convert to fraction form
    13,150.28/19,722.47 = 3,788.21/x
  3. Step 3: Cross multiply
    13,150.28x = 19,722.47 × 3,788.21
  4. Step 4: Simplify right side
    13,150.28x = 74,712,858.08
  5. Step 5: Solve for x
    x = 74,712,858.08/13,150.28
  6. Step 6: Final answer
    x = 5,681.47

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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.