Home / 13,824.21-19,079.39-7,854.69

Finding the Fourth Proportional to 13,824.21, 19,079.39 and 7,854.69

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Solution

The fourth proportional to 13,824.21, 19,079.39 and 7,854.69 is: 10,840.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.21 : 19,079.39 = 7,854.69 : x
  2. Step 2: Convert to fraction form
    13,824.21/19,079.39 = 7,854.69/x
  3. Step 3: Cross multiply
    13,824.21x = 19,079.39 × 7,854.69
  4. Step 4: Simplify right side
    13,824.21x = 149,862,654.57
  5. Step 5: Solve for x
    x = 149,862,654.57/13,824.21
  6. Step 6: Final answer
    x = 10,840.59

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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.