Home / 19,221.18-28,838.64-6,744.66

Finding the Fourth Proportional to 19,221.18, 28,838.64 and 6,744.66

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Solution

The fourth proportional to 19,221.18, 28,838.64 and 6,744.66 is: 10,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.18 : 28,838.64 = 6,744.66 : x
  2. Step 2: Convert to fraction form
    19,221.18/28,838.64 = 6,744.66/x
  3. Step 3: Cross multiply
    19,221.18x = 28,838.64 × 6,744.66
  4. Step 4: Simplify right side
    19,221.18x = 194,506,821.66
  5. Step 5: Solve for x
    x = 194,506,821.66/19,221.18
  6. Step 6: Final answer
    x = 10,119.40

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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.