Home / 13,189.20-19,785.60-4,867.20

Finding the Fourth Proportional to 13,189.20, 19,785.60 and 4,867.20

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Solution

The fourth proportional to 13,189.20, 19,785.60 and 4,867.20 is: 7,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.20 : 19,785.60 = 4,867.20 : x
  2. Step 2: Convert to fraction form
    13,189.20/19,785.60 = 4,867.20/x
  3. Step 3: Cross multiply
    13,189.20x = 19,785.60 × 4,867.20
  4. Step 4: Simplify right side
    13,189.20x = 96,300,472.32
  5. Step 5: Solve for x
    x = 96,300,472.32/13,189.20
  6. Step 6: Final answer
    x = 7,301.46

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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.