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Finding the Fourth Proportional to 30,601.48, 45,887.90 and 11,890.22

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Solution

The fourth proportional to 30,601.48, 45,887.90 and 11,890.22 is: 17,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,601.48 : 45,887.90 = 11,890.22 : x
  2. Step 2: Convert to fraction form
    30,601.48/45,887.90 = 11,890.22/x
  3. Step 3: Cross multiply
    30,601.48x = 45,887.90 × 11,890.22
  4. Step 4: Simplify right side
    30,601.48x = 545,617,226.34
  5. Step 5: Solve for x
    x = 545,617,226.34/30,601.48
  6. Step 6: Final answer
    x = 17,829.77

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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.