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Finding the Fourth Proportional to 12,869.91, 19,303.25 and 5,472.99

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Solution

The fourth proportional to 12,869.91, 19,303.25 and 5,472.99 is: 8,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.91 : 19,303.25 = 5,472.99 : x
  2. Step 2: Convert to fraction form
    12,869.91/19,303.25 = 5,472.99/x
  3. Step 3: Cross multiply
    12,869.91x = 19,303.25 × 5,472.99
  4. Step 4: Simplify right side
    12,869.91x = 105,646,466.85
  5. Step 5: Solve for x
    x = 105,646,466.85/12,869.91
  6. Step 6: Final answer
    x = 8,208.80

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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.