Home / 12,854.40-19,279.96-4,089.48

Finding the Fourth Proportional to 12,854.40, 19,279.96 and 4,089.48

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Solution

The fourth proportional to 12,854.40, 19,279.96 and 4,089.48 is: 6,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854.40 : 19,279.96 = 4,089.48 : x
  2. Step 2: Convert to fraction form
    12,854.40/19,279.96 = 4,089.48/x
  3. Step 3: Cross multiply
    12,854.40x = 19,279.96 × 4,089.48
  4. Step 4: Simplify right side
    12,854.40x = 78,845,010.82
  5. Step 5: Solve for x
    x = 78,845,010.82/12,854.40
  6. Step 6: Final answer
    x = 6,133.70

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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.