Home / 15,312.69-22,930.14-12,228.21

Finding the Fourth Proportional to 15,312.69, 22,930.14 and 12,228.21

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Solution

The fourth proportional to 15,312.69, 22,930.14 and 12,228.21 is: 18,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.69 : 22,930.14 = 12,228.21 : x
  2. Step 2: Convert to fraction form
    15,312.69/22,930.14 = 12,228.21/x
  3. Step 3: Cross multiply
    15,312.69x = 22,930.14 × 12,228.21
  4. Step 4: Simplify right side
    15,312.69x = 280,394,567.25
  5. Step 5: Solve for x
    x = 280,394,567.25/15,312.69
  6. Step 6: Final answer
    x = 18,311.25

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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.