Home / 12,779.78-19,165.01-4,457.43

Finding the Fourth Proportional to 12,779.78, 19,165.01 and 4,457.43

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Solution

The fourth proportional to 12,779.78, 19,165.01 and 4,457.43 is: 6,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.78 : 19,165.01 = 4,457.43 : x
  2. Step 2: Convert to fraction form
    12,779.78/19,165.01 = 4,457.43/x
  3. Step 3: Cross multiply
    12,779.78x = 19,165.01 × 4,457.43
  4. Step 4: Simplify right side
    12,779.78x = 85,426,668.24
  5. Step 5: Solve for x
    x = 85,426,668.24/12,779.78
  6. Step 6: Final answer
    x = 6,684.52

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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.