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Finding the Fourth Proportional to 30,603.24, 45,887.58 and 12,819.24

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Solution

The fourth proportional to 30,603.24, 45,887.58 and 12,819.24 is: 19,221.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.24 : 45,887.58 = 12,819.24 : x
  2. Step 2: Convert to fraction form
    30,603.24/45,887.58 = 12,819.24/x
  3. Step 3: Cross multiply
    30,603.24x = 45,887.58 × 12,819.24
  4. Step 4: Simplify right side
    30,603.24x = 588,243,901.04
  5. Step 5: Solve for x
    x = 588,243,901.04/30,603.24
  6. Step 6: Final answer
    x = 19,221.62

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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.