Home / 13,746.64-20,601.60-7,159

Finding the Fourth Proportional to 13,746.64, 20,601.60 and 7,159

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Solution

The fourth proportional to 13,746.64, 20,601.60 and 7,159 is: 10,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.64 : 20,601.60 = 7,159 : x
  2. Step 2: Convert to fraction form
    13,746.64/20,601.60 = 7,159/x
  3. Step 3: Cross multiply
    13,746.64x = 20,601.60 × 7,159
  4. Step 4: Simplify right side
    13,746.64x = 147,486,854.40
  5. Step 5: Solve for x
    x = 147,486,854.40/13,746.64
  6. Step 6: Final answer
    x = 10,728.94

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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.