Home / 19,915.33-27,479.93-11,415.89

Finding the Fourth Proportional to 19,915.33, 27,479.93 and 11,415.89

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Solution

The fourth proportional to 19,915.33, 27,479.93 and 11,415.89 is: 15,752.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.33 : 27,479.93 = 11,415.89 : x
  2. Step 2: Convert to fraction form
    19,915.33/27,479.93 = 11,415.89/x
  3. Step 3: Cross multiply
    19,915.33x = 27,479.93 × 11,415.89
  4. Step 4: Simplify right side
    19,915.33x = 313,707,749.23
  5. Step 5: Solve for x
    x = 313,707,749.23/19,915.33
  6. Step 6: Final answer
    x = 15,752.08

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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.