Home / 19,913.56-27,479.20-11,415.60

Finding the Fourth Proportional to 19,913.56, 27,479.20 and 11,415.60

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Solution

The fourth proportional to 19,913.56, 27,479.20 and 11,415.60 is: 15,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.56 : 27,479.20 = 11,415.60 : x
  2. Step 2: Convert to fraction form
    19,913.56/27,479.20 = 11,415.60/x
  3. Step 3: Cross multiply
    19,913.56x = 27,479.20 × 11,415.60
  4. Step 4: Simplify right side
    19,913.56x = 313,691,555.52
  5. Step 5: Solve for x
    x = 313,691,555.52/19,913.56
  6. Step 6: Final answer
    x = 15,752.66

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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.