Home / 13,257.81-18,295.34-7,951.64

Finding the Fourth Proportional to 13,257.81, 18,295.34 and 7,951.64

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Solution

The fourth proportional to 13,257.81, 18,295.34 and 7,951.64 is: 10,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.81 : 18,295.34 = 7,951.64 : x
  2. Step 2: Convert to fraction form
    13,257.81/18,295.34 = 7,951.64/x
  3. Step 3: Cross multiply
    13,257.81x = 18,295.34 × 7,951.64
  4. Step 4: Simplify right side
    13,257.81x = 145,477,826.12
  5. Step 5: Solve for x
    x = 145,477,826.12/13,257.81
  6. Step 6: Final answer
    x = 10,972.99

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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.