Home / 12,509.11-18,763.90-4,187.58

Finding the Fourth Proportional to 12,509.11, 18,763.90 and 4,187.58

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Solution

The fourth proportional to 12,509.11, 18,763.90 and 4,187.58 is: 6,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.11 : 18,763.90 = 4,187.58 : x
  2. Step 2: Convert to fraction form
    12,509.11/18,763.90 = 4,187.58/x
  3. Step 3: Cross multiply
    12,509.11x = 18,763.90 × 4,187.58
  4. Step 4: Simplify right side
    12,509.11x = 78,575,255.40
  5. Step 5: Solve for x
    x = 78,575,255.40/12,509.11
  6. Step 6: Final answer
    x = 6,281.44

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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.