Home / 13,424.77-18,528.59-7,758.73

Finding the Fourth Proportional to 13,424.77, 18,528.59 and 7,758.73

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Solution

The fourth proportional to 13,424.77, 18,528.59 and 7,758.73 is: 10,708.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.77 : 18,528.59 = 7,758.73 : x
  2. Step 2: Convert to fraction form
    13,424.77/18,528.59 = 7,758.73/x
  3. Step 3: Cross multiply
    13,424.77x = 18,528.59 × 7,758.73
  4. Step 4: Simplify right side
    13,424.77x = 143,758,327.09
  5. Step 5: Solve for x
    x = 143,758,327.09/13,424.77
  6. Step 6: Final answer
    x = 10,708.44

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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.