Home / 13,258.79-19,891.55-3,899.13

Finding the Fourth Proportional to 13,258.79, 19,891.55 and 3,899.13

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Solution

The fourth proportional to 13,258.79, 19,891.55 and 3,899.13 is: 5,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.79 : 19,891.55 = 3,899.13 : x
  2. Step 2: Convert to fraction form
    13,258.79/19,891.55 = 3,899.13/x
  3. Step 3: Cross multiply
    13,258.79x = 19,891.55 × 3,899.13
  4. Step 4: Simplify right side
    13,258.79x = 77,559,739.35
  5. Step 5: Solve for x
    x = 77,559,739.35/13,258.79
  6. Step 6: Final answer
    x = 5,849.68

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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.