Home / 15,391.80-23,063.06-13,915.58

Finding the Fourth Proportional to 15,391.80, 23,063.06 and 13,915.58

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Solution

The fourth proportional to 15,391.80, 23,063.06 and 13,915.58 is: 20,851.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.80 : 23,063.06 = 13,915.58 : x
  2. Step 2: Convert to fraction form
    15,391.80/23,063.06 = 13,915.58/x
  3. Step 3: Cross multiply
    15,391.80x = 23,063.06 × 13,915.58
  4. Step 4: Simplify right side
    15,391.80x = 320,935,775.95
  5. Step 5: Solve for x
    x = 320,935,775.95/15,391.80
  6. Step 6: Final answer
    x = 20,851.09

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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.