Home / 13,288.94-18,338.09-7,320.45

Finding the Fourth Proportional to 13,288.94, 18,338.09 and 7,320.45

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Solution

The fourth proportional to 13,288.94, 18,338.09 and 7,320.45 is: 10,101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.94 : 18,338.09 = 7,320.45 : x
  2. Step 2: Convert to fraction form
    13,288.94/18,338.09 = 7,320.45/x
  3. Step 3: Cross multiply
    13,288.94x = 18,338.09 × 7,320.45
  4. Step 4: Simplify right side
    13,288.94x = 134,243,034.34
  5. Step 5: Solve for x
    x = 134,243,034.34/13,288.94
  6. Step 6: Final answer
    x = 10,101.87

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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.