Home / 15,420.56-23,106.61-11,919.14

Finding the Fourth Proportional to 15,420.56, 23,106.61 and 11,919.14

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Solution

The fourth proportional to 15,420.56, 23,106.61 and 11,919.14 is: 17,859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.56 : 23,106.61 = 11,919.14 : x
  2. Step 2: Convert to fraction form
    15,420.56/23,106.61 = 11,919.14/x
  3. Step 3: Cross multiply
    15,420.56x = 23,106.61 × 11,919.14
  4. Step 4: Simplify right side
    15,420.56x = 275,410,919.52
  5. Step 5: Solve for x
    x = 275,410,919.52/15,420.56
  6. Step 6: Final answer
    x = 17,859.98

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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.