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Finding the Fourth Proportional to 19,302.50, 28,953.75 and 6,815.75

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Solution

The fourth proportional to 19,302.50, 28,953.75 and 6,815.75 is: 10,223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,302.50 : 28,953.75 = 6,815.75 : x
  2. Step 2: Convert to fraction form
    19,302.50/28,953.75 = 6,815.75/x
  3. Step 3: Cross multiply
    19,302.50x = 28,953.75 × 6,815.75
  4. Step 4: Simplify right side
    19,302.50x = 197,341,402.35
  5. Step 5: Solve for x
    x = 197,341,402.35/19,302.50
  6. Step 6: Final answer
    x = 10,223.62

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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.