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Finding the Fourth Proportional to 14,572.81, 20,110.93 and 8,285.59

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Solution

The fourth proportional to 14,572.81, 20,110.93 and 8,285.59 is: 11,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,572.81 : 20,110.93 = 8,285.59 : x
  2. Step 2: Convert to fraction form
    14,572.81/20,110.93 = 8,285.59/x
  3. Step 3: Cross multiply
    14,572.81x = 20,110.93 × 8,285.59
  4. Step 4: Simplify right side
    14,572.81x = 166,630,971.53
  5. Step 5: Solve for x
    x = 166,630,971.53/14,572.81
  6. Step 6: Final answer
    x = 11,434.37

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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.