Home / 13,421.54-18,486.96-11,294.48

Finding the Fourth Proportional to 13,421.54, 18,486.96 and 11,294.48

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Solution

The fourth proportional to 13,421.54, 18,486.96 and 11,294.48 is: 15,557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.54 : 18,486.96 = 11,294.48 : x
  2. Step 2: Convert to fraction form
    13,421.54/18,486.96 = 11,294.48/x
  3. Step 3: Cross multiply
    13,421.54x = 18,486.96 × 11,294.48
  4. Step 4: Simplify right side
    13,421.54x = 208,800,599.98
  5. Step 5: Solve for x
    x = 208,800,599.98/13,421.54
  6. Step 6: Final answer
    x = 15,557.13

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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.