Home / 13,288.54-18,338.10-7,320.07

Finding the Fourth Proportional to 13,288.54, 18,338.10 and 7,320.07

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Solution

The fourth proportional to 13,288.54, 18,338.10 and 7,320.07 is: 10,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.54 : 18,338.10 = 7,320.07 : x
  2. Step 2: Convert to fraction form
    13,288.54/18,338.10 = 7,320.07/x
  3. Step 3: Cross multiply
    13,288.54x = 18,338.10 × 7,320.07
  4. Step 4: Simplify right side
    13,288.54x = 134,236,175.67
  5. Step 5: Solve for x
    x = 134,236,175.67/13,288.54
  6. Step 6: Final answer
    x = 10,101.65

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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.