Home / 19,711.86-29,567.43-4,920.90

Finding the Fourth Proportional to 19,711.86, 29,567.43 and 4,920.90

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Solution

The fourth proportional to 19,711.86, 29,567.43 and 4,920.90 is: 7,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.86 : 29,567.43 = 4,920.90 : x
  2. Step 2: Convert to fraction form
    19,711.86/29,567.43 = 4,920.90/x
  3. Step 3: Cross multiply
    19,711.86x = 29,567.43 × 4,920.90
  4. Step 4: Simplify right side
    19,711.86x = 145,498,366.29
  5. Step 5: Solve for x
    x = 145,498,366.29/19,711.86
  6. Step 6: Final answer
    x = 7,381.26

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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.