Home / 12,630.15-18,950.70-6,779.91

Finding the Fourth Proportional to 12,630.15, 18,950.70 and 6,779.91

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Solution

The fourth proportional to 12,630.15, 18,950.70 and 6,779.91 is: 10,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.15 : 18,950.70 = 6,779.91 : x
  2. Step 2: Convert to fraction form
    12,630.15/18,950.70 = 6,779.91/x
  3. Step 3: Cross multiply
    12,630.15x = 18,950.70 × 6,779.91
  4. Step 4: Simplify right side
    12,630.15x = 128,484,040.44
  5. Step 5: Solve for x
    x = 128,484,040.44/12,630.15
  6. Step 6: Final answer
    x = 10,172.80

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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.