Home / 13,126.64-19,686.60-3,890.48

Finding the Fourth Proportional to 13,126.64, 19,686.60 and 3,890.48

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Solution

The fourth proportional to 13,126.64, 19,686.60 and 3,890.48 is: 5,834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.64 : 19,686.60 = 3,890.48 : x
  2. Step 2: Convert to fraction form
    13,126.64/19,686.60 = 3,890.48/x
  3. Step 3: Cross multiply
    13,126.64x = 19,686.60 × 3,890.48
  4. Step 4: Simplify right side
    13,126.64x = 76,590,323.57
  5. Step 5: Solve for x
    x = 76,590,323.57/13,126.64
  6. Step 6: Final answer
    x = 5,834.72

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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.