Home / 13,915.45-20,848.86-11,590.39

Finding the Fourth Proportional to 13,915.45, 20,848.86 and 11,590.39

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Solution

The fourth proportional to 13,915.45, 20,848.86 and 11,590.39 is: 17,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.45 : 20,848.86 = 11,590.39 : x
  2. Step 2: Convert to fraction form
    13,915.45/20,848.86 = 11,590.39/x
  3. Step 3: Cross multiply
    13,915.45x = 20,848.86 × 11,590.39
  4. Step 4: Simplify right side
    13,915.45x = 241,646,418.46
  5. Step 5: Solve for x
    x = 241,646,418.46/13,915.45
  6. Step 6: Final answer
    x = 17,365.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.