Home / 13,069.92-18,038.88-7,767.72

Finding the Fourth Proportional to 13,069.92, 18,038.88 and 7,767.72

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Solution

The fourth proportional to 13,069.92, 18,038.88 and 7,767.72 is: 10,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.92 : 18,038.88 = 7,767.72 : x
  2. Step 2: Convert to fraction form
    13,069.92/18,038.88 = 7,767.72/x
  3. Step 3: Cross multiply
    13,069.92x = 18,038.88 × 7,767.72
  4. Step 4: Simplify right side
    13,069.92x = 140,120,968.95
  5. Step 5: Solve for x
    x = 140,120,968.95/13,069.92
  6. Step 6: Final answer
    x = 10,720.87

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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.