Home / 20,174.60-30,277.70-13,978.10

Finding the Fourth Proportional to 20,174.60, 30,277.70 and 13,978.10

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Solution

The fourth proportional to 20,174.60, 30,277.70 and 13,978.10 is: 20,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.60 : 30,277.70 = 13,978.10 : x
  2. Step 2: Convert to fraction form
    20,174.60/30,277.70 = 13,978.10/x
  3. Step 3: Cross multiply
    20,174.60x = 30,277.70 × 13,978.10
  4. Step 4: Simplify right side
    20,174.60x = 423,224,718.37
  5. Step 5: Solve for x
    x = 423,224,718.37/20,174.60
  6. Step 6: Final answer
    x = 20,978.10

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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.