Home / 13,314.82-19,938.06-12,920.66

Finding the Fourth Proportional to 13,314.82, 19,938.06 and 12,920.66

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Solution

The fourth proportional to 13,314.82, 19,938.06 and 12,920.66 is: 19,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,314.82 : 19,938.06 = 12,920.66 : x
  2. Step 2: Convert to fraction form
    13,314.82/19,938.06 = 12,920.66/x
  3. Step 3: Cross multiply
    13,314.82x = 19,938.06 × 12,920.66
  4. Step 4: Simplify right side
    13,314.82x = 257,612,894.32
  5. Step 5: Solve for x
    x = 257,612,894.32/13,314.82
  6. Step 6: Final answer
    x = 19,347.83

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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.