Home / 19,915.07-27,479.58-11,415.63

Finding the Fourth Proportional to 19,915.07, 27,479.58 and 11,415.63

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Solution

The fourth proportional to 19,915.07, 27,479.58 and 11,415.63 is: 15,751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.07 : 27,479.58 = 11,415.63 : x
  2. Step 2: Convert to fraction form
    19,915.07/27,479.58 = 11,415.63/x
  3. Step 3: Cross multiply
    19,915.07x = 27,479.58 × 11,415.63
  4. Step 4: Simplify right side
    19,915.07x = 313,696,623.50
  5. Step 5: Solve for x
    x = 313,696,623.50/19,915.07
  6. Step 6: Final answer
    x = 15,751.72

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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.