Home / 12,779.12-19,171.11-4,461.51

Finding the Fourth Proportional to 12,779.12, 19,171.11 and 4,461.51

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Solution

The fourth proportional to 12,779.12, 19,171.11 and 4,461.51 is: 6,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.12 : 19,171.11 = 4,461.51 : x
  2. Step 2: Convert to fraction form
    12,779.12/19,171.11 = 4,461.51/x
  3. Step 3: Cross multiply
    12,779.12x = 19,171.11 × 4,461.51
  4. Step 4: Simplify right side
    12,779.12x = 85,532,098.98
  5. Step 5: Solve for x
    x = 85,532,098.98/12,779.12
  6. Step 6: Final answer
    x = 6,693.11

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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.