Home / 19,809.12-29,717.28-6,660.48

Finding the Fourth Proportional to 19,809.12, 29,717.28 and 6,660.48

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Solution

The fourth proportional to 19,809.12, 29,717.28 and 6,660.48 is: 9,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.12 : 29,717.28 = 6,660.48 : x
  2. Step 2: Convert to fraction form
    19,809.12/29,717.28 = 6,660.48/x
  3. Step 3: Cross multiply
    19,809.12x = 29,717.28 × 6,660.48
  4. Step 4: Simplify right side
    19,809.12x = 197,931,349.09
  5. Step 5: Solve for x
    x = 197,931,349.09/19,809.12
  6. Step 6: Final answer
    x = 9,991.93

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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.