Home / 13,779.12-19,023.96-9,071.52

Finding the Fourth Proportional to 13,779.12, 19,023.96 and 9,071.52

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Solution

The fourth proportional to 13,779.12, 19,023.96 and 9,071.52 is: 12,524.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.12 : 19,023.96 = 9,071.52 : x
  2. Step 2: Convert to fraction form
    13,779.12/19,023.96 = 9,071.52/x
  3. Step 3: Cross multiply
    13,779.12x = 19,023.96 × 9,071.52
  4. Step 4: Simplify right side
    13,779.12x = 172,576,233.62
  5. Step 5: Solve for x
    x = 172,576,233.62/13,779.12
  6. Step 6: Final answer
    x = 12,524.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.