Home / 19,913.30-27,479.10-11,415.44

Finding the Fourth Proportional to 19,913.30, 27,479.10 and 11,415.44

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Solution

The fourth proportional to 19,913.30, 27,479.10 and 11,415.44 is: 15,752.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.30 : 27,479.10 = 11,415.44 : x
  2. Step 2: Convert to fraction form
    19,913.30/27,479.10 = 11,415.44/x
  3. Step 3: Cross multiply
    19,913.30x = 27,479.10 × 11,415.44
  4. Step 4: Simplify right side
    19,913.30x = 313,686,017.30
  5. Step 5: Solve for x
    x = 313,686,017.30/19,913.30
  6. Step 6: Final answer
    x = 15,752.59

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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.