Home / 12,885.39-19,294.97-11,420.19

Finding the Fourth Proportional to 12,885.39, 19,294.97 and 11,420.19

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Solution

The fourth proportional to 12,885.39, 19,294.97 and 11,420.19 is: 17,100.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.39 : 19,294.97 = 11,420.19 : x
  2. Step 2: Convert to fraction form
    12,885.39/19,294.97 = 11,420.19/x
  3. Step 3: Cross multiply
    12,885.39x = 19,294.97 × 11,420.19
  4. Step 4: Simplify right side
    12,885.39x = 220,352,166.34
  5. Step 5: Solve for x
    x = 220,352,166.34/12,885.39
  6. Step 6: Final answer
    x = 17,100.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.