Home / 13,981.25-19,294.13-8,392.25

Finding the Fourth Proportional to 13,981.25, 19,294.13 and 8,392.25

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Solution

The fourth proportional to 13,981.25, 19,294.13 and 8,392.25 is: 11,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.25 : 19,294.13 = 8,392.25 : x
  2. Step 2: Convert to fraction form
    13,981.25/19,294.13 = 8,392.25/x
  3. Step 3: Cross multiply
    13,981.25x = 19,294.13 × 8,392.25
  4. Step 4: Simplify right side
    13,981.25x = 161,921,162.49
  5. Step 5: Solve for x
    x = 161,921,162.49/13,981.25
  6. Step 6: Final answer
    x = 11,581.31

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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.