Home / 20,430.78-30,627.67-14,193.72

Finding the Fourth Proportional to 20,430.78, 30,627.67 and 14,193.72

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Solution

The fourth proportional to 20,430.78, 30,627.67 and 14,193.72 is: 21,277.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.78 : 30,627.67 = 14,193.72 : x
  2. Step 2: Convert to fraction form
    20,430.78/30,627.67 = 14,193.72/x
  3. Step 3: Cross multiply
    20,430.78x = 30,627.67 × 14,193.72
  4. Step 4: Simplify right side
    20,430.78x = 434,720,572.23
  5. Step 5: Solve for x
    x = 434,720,572.23/20,430.78
  6. Step 6: Final answer
    x = 21,277.73

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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.