Home / 12,814.60-19,221.90-5,417.88

Finding the Fourth Proportional to 12,814.60, 19,221.90 and 5,417.88

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Solution

The fourth proportional to 12,814.60, 19,221.90 and 5,417.88 is: 8,126.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,814.60 : 19,221.90 = 5,417.88 : x
  2. Step 2: Convert to fraction form
    12,814.60/19,221.90 = 5,417.88/x
  3. Step 3: Cross multiply
    12,814.60x = 19,221.90 × 5,417.88
  4. Step 4: Simplify right side
    12,814.60x = 104,141,947.57
  5. Step 5: Solve for x
    x = 104,141,947.57/12,814.60
  6. Step 6: Final answer
    x = 8,126.82

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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.