Home / 13,288.92-18,338.70-7,320.57

Finding the Fourth Proportional to 13,288.92, 18,338.70 and 7,320.57

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Solution

The fourth proportional to 13,288.92, 18,338.70 and 7,320.57 is: 10,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.92 : 18,338.70 = 7,320.57 : x
  2. Step 2: Convert to fraction form
    13,288.92/18,338.70 = 7,320.57/x
  3. Step 3: Cross multiply
    13,288.92x = 18,338.70 × 7,320.57
  4. Step 4: Simplify right side
    13,288.92x = 134,249,737.06
  5. Step 5: Solve for x
    x = 134,249,737.06/13,288.92
  6. Step 6: Final answer
    x = 10,102.38

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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.