Home / 19,717.61-29,581-6,390.07

Finding the Fourth Proportional to 19,717.61, 29,581 and 6,390.07

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Solution

The fourth proportional to 19,717.61, 29,581 and 6,390.07 is: 9,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,717.61 : 29,581 = 6,390.07 : x
  2. Step 2: Convert to fraction form
    19,717.61/29,581 = 6,390.07/x
  3. Step 3: Cross multiply
    19,717.61x = 29,581 × 6,390.07
  4. Step 4: Simplify right side
    19,717.61x = 189,024,512.77
  5. Step 5: Solve for x
    x = 189,024,512.77/19,717.61
  6. Step 6: Final answer
    x = 9,586.59

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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.