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Finding the Fourth Proportional to 14,842.67, 20,484.78 and 8,555.09

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Solution

The fourth proportional to 14,842.67, 20,484.78 and 8,555.09 is: 11,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,842.67 : 20,484.78 = 8,555.09 : x
  2. Step 2: Convert to fraction form
    14,842.67/20,484.78 = 8,555.09/x
  3. Step 3: Cross multiply
    14,842.67x = 20,484.78 × 8,555.09
  4. Step 4: Simplify right side
    14,842.67x = 175,249,136.53
  5. Step 5: Solve for x
    x = 175,249,136.53/14,842.67
  6. Step 6: Final answer
    x = 11,807.12

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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.