Home / 19,318.85-28,981.55-5,988.80

Finding the Fourth Proportional to 19,318.85, 28,981.55 and 5,988.80

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Solution

The fourth proportional to 19,318.85, 28,981.55 and 5,988.80 is: 8,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.85 : 28,981.55 = 5,988.80 : x
  2. Step 2: Convert to fraction form
    19,318.85/28,981.55 = 5,988.80/x
  3. Step 3: Cross multiply
    19,318.85x = 28,981.55 × 5,988.80
  4. Step 4: Simplify right side
    19,318.85x = 173,564,706.64
  5. Step 5: Solve for x
    x = 173,564,706.64/19,318.85
  6. Step 6: Final answer
    x = 8,984.22

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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.