Home / 17,485.20-26,190.81-14,139.09

Finding the Fourth Proportional to 17,485.20, 26,190.81 and 14,139.09

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Solution

The fourth proportional to 17,485.20, 26,190.81 and 14,139.09 is: 21,178.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,485.20 : 26,190.81 = 14,139.09 : x
  2. Step 2: Convert to fraction form
    17,485.20/26,190.81 = 14,139.09/x
  3. Step 3: Cross multiply
    17,485.20x = 26,190.81 × 14,139.09
  4. Step 4: Simplify right side
    17,485.20x = 370,314,219.76
  5. Step 5: Solve for x
    x = 370,314,219.76/17,485.20
  6. Step 6: Final answer
    x = 21,178.72

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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.