Home / 19,620.86-29,427.12-6,470.10

Finding the Fourth Proportional to 19,620.86, 29,427.12 and 6,470.10

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Solution

The fourth proportional to 19,620.86, 29,427.12 and 6,470.10 is: 9,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.86 : 29,427.12 = 6,470.10 : x
  2. Step 2: Convert to fraction form
    19,620.86/29,427.12 = 6,470.10/x
  3. Step 3: Cross multiply
    19,620.86x = 29,427.12 × 6,470.10
  4. Step 4: Simplify right side
    19,620.86x = 190,396,409.11
  5. Step 5: Solve for x
    x = 190,396,409.11/19,620.86
  6. Step 6: Final answer
    x = 9,703.78

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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.