Home / 13,921.76-19,211.12-7,632.88

Finding the Fourth Proportional to 13,921.76, 19,211.12 and 7,632.88

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Solution

The fourth proportional to 13,921.76, 19,211.12 and 7,632.88 is: 10,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.76 : 19,211.12 = 7,632.88 : x
  2. Step 2: Convert to fraction form
    13,921.76/19,211.12 = 7,632.88/x
  3. Step 3: Cross multiply
    13,921.76x = 19,211.12 × 7,632.88
  4. Step 4: Simplify right side
    13,921.76x = 146,636,173.63
  5. Step 5: Solve for x
    x = 146,636,173.63/13,921.76
  6. Step 6: Final answer
    x = 10,532.88

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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.