Home / 13,250.90-19,876.14-3,390.09

Finding the Fourth Proportional to 13,250.90, 19,876.14 and 3,390.09

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Solution

The fourth proportional to 13,250.90, 19,876.14 and 3,390.09 is: 5,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,250.90 : 19,876.14 = 3,390.09 : x
  2. Step 2: Convert to fraction form
    13,250.90/19,876.14 = 3,390.09/x
  3. Step 3: Cross multiply
    13,250.90x = 19,876.14 × 3,390.09
  4. Step 4: Simplify right side
    13,250.90x = 67,381,903.45
  5. Step 5: Solve for x
    x = 67,381,903.45/13,250.90
  6. Step 6: Final answer
    x = 5,085.08

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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.