Home / 12,918.60-19,379.52-6,339.24

Finding the Fourth Proportional to 12,918.60, 19,379.52 and 6,339.24

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Solution

The fourth proportional to 12,918.60, 19,379.52 and 6,339.24 is: 9,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.60 : 19,379.52 = 6,339.24 : x
  2. Step 2: Convert to fraction form
    12,918.60/19,379.52 = 6,339.24/x
  3. Step 3: Cross multiply
    12,918.60x = 19,379.52 × 6,339.24
  4. Step 4: Simplify right side
    12,918.60x = 122,851,428.36
  5. Step 5: Solve for x
    x = 122,851,428.36/12,918.60
  6. Step 6: Final answer
    x = 9,509.65

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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.