Home / 13,702.06-20,519.97-7,840.90

Finding the Fourth Proportional to 13,702.06, 20,519.97 and 7,840.90

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Solution

The fourth proportional to 13,702.06, 20,519.97 and 7,840.90 is: 11,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.06 : 20,519.97 = 7,840.90 : x
  2. Step 2: Convert to fraction form
    13,702.06/20,519.97 = 7,840.90/x
  3. Step 3: Cross multiply
    13,702.06x = 20,519.97 × 7,840.90
  4. Step 4: Simplify right side
    13,702.06x = 160,895,032.77
  5. Step 5: Solve for x
    x = 160,895,032.77/13,702.06
  6. Step 6: Final answer
    x = 11,742.40

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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.