Home / 19,860.20-27,405.36-11,360.60

Finding the Fourth Proportional to 19,860.20, 27,405.36 and 11,360.60

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Solution

The fourth proportional to 19,860.20, 27,405.36 and 11,360.60 is: 15,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.20 : 27,405.36 = 11,360.60 : x
  2. Step 2: Convert to fraction form
    19,860.20/27,405.36 = 11,360.60/x
  3. Step 3: Cross multiply
    19,860.20x = 27,405.36 × 11,360.60
  4. Step 4: Simplify right side
    19,860.20x = 311,341,332.82
  5. Step 5: Solve for x
    x = 311,341,332.82/19,860.20
  6. Step 6: Final answer
    x = 15,676.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.