Home / 19,579.86-29,353.19-6,428.70

Finding the Fourth Proportional to 19,579.86, 29,353.19 and 6,428.70

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Solution

The fourth proportional to 19,579.86, 29,353.19 and 6,428.70 is: 9,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.86 : 29,353.19 = 6,428.70 : x
  2. Step 2: Convert to fraction form
    19,579.86/29,353.19 = 6,428.70/x
  3. Step 3: Cross multiply
    19,579.86x = 29,353.19 × 6,428.70
  4. Step 4: Simplify right side
    19,579.86x = 188,702,820.41
  5. Step 5: Solve for x
    x = 188,702,820.41/19,579.86
  6. Step 6: Final answer
    x = 9,637.60

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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.