Home / 19,130.65-28,679.54-6,649.05

Finding the Fourth Proportional to 19,130.65, 28,679.54 and 6,649.05

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Solution

The fourth proportional to 19,130.65, 28,679.54 and 6,649.05 is: 9,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.65 : 28,679.54 = 6,649.05 : x
  2. Step 2: Convert to fraction form
    19,130.65/28,679.54 = 6,649.05/x
  3. Step 3: Cross multiply
    19,130.65x = 28,679.54 × 6,649.05
  4. Step 4: Simplify right side
    19,130.65x = 190,691,695.44
  5. Step 5: Solve for x
    x = 190,691,695.44/19,130.65
  6. Step 6: Final answer
    x = 9,967.86

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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.