Home / 20,277.42-30,352.41-12,890.22

Finding the Fourth Proportional to 20,277.42, 30,352.41 and 12,890.22

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Solution

The fourth proportional to 20,277.42, 30,352.41 and 12,890.22 is: 19,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.42 : 30,352.41 = 12,890.22 : x
  2. Step 2: Convert to fraction form
    20,277.42/30,352.41 = 12,890.22/x
  3. Step 3: Cross multiply
    20,277.42x = 30,352.41 × 12,890.22
  4. Step 4: Simplify right side
    20,277.42x = 391,249,242.43
  5. Step 5: Solve for x
    x = 391,249,242.43/20,277.42
  6. Step 6: Final answer
    x = 19,294.82

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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.