Home / 13,320.09-18,382.34-7,656.67

Finding the Fourth Proportional to 13,320.09, 18,382.34 and 7,656.67

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Solution

The fourth proportional to 13,320.09, 18,382.34 and 7,656.67 is: 10,566.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.09 : 18,382.34 = 7,656.67 : x
  2. Step 2: Convert to fraction form
    13,320.09/18,382.34 = 7,656.67/x
  3. Step 3: Cross multiply
    13,320.09x = 18,382.34 × 7,656.67
  4. Step 4: Simplify right side
    13,320.09x = 140,747,426.97
  5. Step 5: Solve for x
    x = 140,747,426.97/13,320.09
  6. Step 6: Final answer
    x = 10,566.55

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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.