Home / 17,139.70-25,709.55-13,246.90

Finding the Fourth Proportional to 17,139.70, 25,709.55 and 13,246.90

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Solution

The fourth proportional to 17,139.70, 25,709.55 and 13,246.90 is: 19,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.70 : 25,709.55 = 13,246.90 : x
  2. Step 2: Convert to fraction form
    17,139.70/25,709.55 = 13,246.90/x
  3. Step 3: Cross multiply
    17,139.70x = 25,709.55 × 13,246.90
  4. Step 4: Simplify right side
    17,139.70x = 340,571,837.90
  5. Step 5: Solve for x
    x = 340,571,837.90/17,139.70
  6. Step 6: Final answer
    x = 19,870.35

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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.