Home / 13,897.76-19,173.52-8,515.28

Finding the Fourth Proportional to 13,897.76, 19,173.52 and 8,515.28

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Solution

The fourth proportional to 13,897.76, 19,173.52 and 8,515.28 is: 11,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.76 : 19,173.52 = 8,515.28 : x
  2. Step 2: Convert to fraction form
    13,897.76/19,173.52 = 8,515.28/x
  3. Step 3: Cross multiply
    13,897.76x = 19,173.52 × 8,515.28
  4. Step 4: Simplify right side
    13,897.76x = 163,267,891.39
  5. Step 5: Solve for x
    x = 163,267,891.39/13,897.76
  6. Step 6: Final answer
    x = 11,747.78

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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.