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Finding the Fourth Proportional to 14,457.84, 19,948.44 and 8,169.36

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Solution

The fourth proportional to 14,457.84, 19,948.44 and 8,169.36 is: 11,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,457.84 : 19,948.44 = 8,169.36 : x
  2. Step 2: Convert to fraction form
    14,457.84/19,948.44 = 8,169.36/x
  3. Step 3: Cross multiply
    14,457.84x = 19,948.44 × 8,169.36
  4. Step 4: Simplify right side
    14,457.84x = 162,965,987.80
  5. Step 5: Solve for x
    x = 162,965,987.80/14,457.84
  6. Step 6: Final answer
    x = 11,271.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.