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Finding the Fourth Proportional to 19,332.75, 28,990.93 and 6,855.91

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Solution

The fourth proportional to 19,332.75, 28,990.93 and 6,855.91 is: 10,280.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,332.75 : 28,990.93 = 6,855.91 : x
  2. Step 2: Convert to fraction form
    19,332.75/28,990.93 = 6,855.91/x
  3. Step 3: Cross multiply
    19,332.75x = 28,990.93 × 6,855.91
  4. Step 4: Simplify right side
    19,332.75x = 198,759,206.90
  5. Step 5: Solve for x
    x = 198,759,206.90/19,332.75
  6. Step 6: Final answer
    x = 10,280.96

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1.5x scale

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.