Home / 13,711.56-18,917.92-9,240.36

Finding the Fourth Proportional to 13,711.56, 18,917.92 and 9,240.36

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Solution

The fourth proportional to 13,711.56, 18,917.92 and 9,240.36 is: 12,748.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.56 : 18,917.92 = 9,240.36 : x
  2. Step 2: Convert to fraction form
    13,711.56/18,917.92 = 9,240.36/x
  3. Step 3: Cross multiply
    13,711.56x = 18,917.92 × 9,240.36
  4. Step 4: Simplify right side
    13,711.56x = 174,808,391.25
  5. Step 5: Solve for x
    x = 174,808,391.25/13,711.56
  6. Step 6: Final answer
    x = 12,748.98

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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.