Home / 20,429.11-28,202.67-14,130.55

Finding the Fourth Proportional to 20,429.11, 28,202.67 and 14,130.55

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Solution

The fourth proportional to 20,429.11, 28,202.67 and 14,130.55 is: 19,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.11 : 28,202.67 = 14,130.55 : x
  2. Step 2: Convert to fraction form
    20,429.11/28,202.67 = 14,130.55/x
  3. Step 3: Cross multiply
    20,429.11x = 28,202.67 × 14,130.55
  4. Step 4: Simplify right side
    20,429.11x = 398,519,026.90
  5. Step 5: Solve for x
    x = 398,519,026.90/20,429.11
  6. Step 6: Final answer
    x = 19,507.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.