Home / 13,567.76-18,723.56-7,906.40

Finding the Fourth Proportional to 13,567.76, 18,723.56 and 7,906.40

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Solution

The fourth proportional to 13,567.76, 18,723.56 and 7,906.40 is: 10,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,567.76 : 18,723.56 = 7,906.40 : x
  2. Step 2: Convert to fraction form
    13,567.76/18,723.56 = 7,906.40/x
  3. Step 3: Cross multiply
    13,567.76x = 18,723.56 × 7,906.40
  4. Step 4: Simplify right side
    13,567.76x = 148,035,880.93
  5. Step 5: Solve for x
    x = 148,035,880.93/13,567.76
  6. Step 6: Final answer
    x = 10,910.85

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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.