Home / 19,820.18-29,730.06-6,672.47

Finding the Fourth Proportional to 19,820.18, 29,730.06 and 6,672.47

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Solution

The fourth proportional to 19,820.18, 29,730.06 and 6,672.47 is: 10,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.18 : 29,730.06 = 6,672.47 : x
  2. Step 2: Convert to fraction form
    19,820.18/29,730.06 = 6,672.47/x
  3. Step 3: Cross multiply
    19,820.18x = 29,730.06 × 6,672.47
  4. Step 4: Simplify right side
    19,820.18x = 198,372,784.80
  5. Step 5: Solve for x
    x = 198,372,784.80/19,820.18
  6. Step 6: Final answer
    x = 10,008.63

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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.