Home / 13,929.34-19,215.72-9,217.56

Finding the Fourth Proportional to 13,929.34, 19,215.72 and 9,217.56

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Solution

The fourth proportional to 13,929.34, 19,215.72 and 9,217.56 is: 12,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.34 : 19,215.72 = 9,217.56 : x
  2. Step 2: Convert to fraction form
    13,929.34/19,215.72 = 9,217.56/x
  3. Step 3: Cross multiply
    13,929.34x = 19,215.72 × 9,217.56
  4. Step 4: Simplify right side
    13,929.34x = 177,122,052.04
  5. Step 5: Solve for x
    x = 177,122,052.04/13,929.34
  6. Step 6: Final answer
    x = 12,715.75

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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.