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Finding the Fourth Proportional to 12,803.89, 19,213.95 and 5,012.50

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Solution

The fourth proportional to 12,803.89, 19,213.95 and 5,012.50 is: 7,521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.89 : 19,213.95 = 5,012.50 : x
  2. Step 2: Convert to fraction form
    12,803.89/19,213.95 = 5,012.50/x
  3. Step 3: Cross multiply
    12,803.89x = 19,213.95 × 5,012.50
  4. Step 4: Simplify right side
    12,803.89x = 96,309,924.38
  5. Step 5: Solve for x
    x = 96,309,924.38/12,803.89
  6. Step 6: Final answer
    x = 7,521.93

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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.