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Finding the Fourth Proportional to 12,810.52, 19,212.04 and 4,488.99

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Solution

The fourth proportional to 12,810.52, 19,212.04 and 4,488.99 is: 6,732.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.52 : 19,212.04 = 4,488.99 : x
  2. Step 2: Convert to fraction form
    12,810.52/19,212.04 = 4,488.99/x
  3. Step 3: Cross multiply
    12,810.52x = 19,212.04 × 4,488.99
  4. Step 4: Simplify right side
    12,810.52x = 86,242,563.76
  5. Step 5: Solve for x
    x = 86,242,563.76/12,810.52
  6. Step 6: Final answer
    x = 6,732.17

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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.