Home / 13,289.12-18,338.52-7,320.56

Finding the Fourth Proportional to 13,289.12, 18,338.52 and 7,320.56

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Solution

The fourth proportional to 13,289.12, 18,338.52 and 7,320.56 is: 10,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.12 : 18,338.52 = 7,320.56 : x
  2. Step 2: Convert to fraction form
    13,289.12/18,338.52 = 7,320.56/x
  3. Step 3: Cross multiply
    13,289.12x = 18,338.52 × 7,320.56
  4. Step 4: Simplify right side
    13,289.12x = 134,248,235.97
  5. Step 5: Solve for x
    x = 134,248,235.97/13,289.12
  6. Step 6: Final answer
    x = 10,102.12

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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.