Home / 30,288.26-45,412.95-19,887.86

Finding the Fourth Proportional to 30,288.26, 45,412.95 and 19,887.86

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Solution

The fourth proportional to 30,288.26, 45,412.95 and 19,887.86 is: 29,819.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,288.26 : 45,412.95 = 19,887.86 : x
  2. Step 2: Convert to fraction form
    30,288.26/45,412.95 = 19,887.86/x
  3. Step 3: Cross multiply
    30,288.26x = 45,412.95 × 19,887.86
  4. Step 4: Simplify right side
    30,288.26x = 903,166,391.79
  5. Step 5: Solve for x
    x = 903,166,391.79/30,288.26
  6. Step 6: Final answer
    x = 29,819.03

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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.