Home / 13,829.58-19,087.47-12,985.56

Finding the Fourth Proportional to 13,829.58, 19,087.47 and 12,985.56

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Solution

The fourth proportional to 13,829.58, 19,087.47 and 12,985.56 is: 17,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.58 : 19,087.47 = 12,985.56 : x
  2. Step 2: Convert to fraction form
    13,829.58/19,087.47 = 12,985.56/x
  3. Step 3: Cross multiply
    13,829.58x = 19,087.47 × 12,985.56
  4. Step 4: Simplify right side
    13,829.58x = 247,861,486.93
  5. Step 5: Solve for x
    x = 247,861,486.93/13,829.58
  6. Step 6: Final answer
    x = 17,922.56

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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.