Home / 13,670.77-20,506.37-3,809.95

Finding the Fourth Proportional to 13,670.77, 20,506.37 and 3,809.95

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Solution

The fourth proportional to 13,670.77, 20,506.37 and 3,809.95 is: 5,714.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.77 : 20,506.37 = 3,809.95 : x
  2. Step 2: Convert to fraction form
    13,670.77/20,506.37 = 3,809.95/x
  3. Step 3: Cross multiply
    13,670.77x = 20,506.37 × 3,809.95
  4. Step 4: Simplify right side
    13,670.77x = 78,128,244.38
  5. Step 5: Solve for x
    x = 78,128,244.38/13,670.77
  6. Step 6: Final answer
    x = 5,714.98

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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.