Home / 15,005.37-20,706.85-8,290.85

Finding the Fourth Proportional to 15,005.37, 20,706.85 and 8,290.85

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Solution

The fourth proportional to 15,005.37, 20,706.85 and 8,290.85 is: 11,441.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.37 : 20,706.85 = 8,290.85 : x
  2. Step 2: Convert to fraction form
    15,005.37/20,706.85 = 8,290.85/x
  3. Step 3: Cross multiply
    15,005.37x = 20,706.85 × 8,290.85
  4. Step 4: Simplify right side
    15,005.37x = 171,677,304.46
  5. Step 5: Solve for x
    x = 171,677,304.46/15,005.37
  6. Step 6: Final answer
    x = 11,441.06

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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.