Home / 13,007.12-19,499.70-5,221.40

Finding the Fourth Proportional to 13,007.12, 19,499.70 and 5,221.40

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Solution

The fourth proportional to 13,007.12, 19,499.70 and 5,221.40 is: 7,827.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.12 : 19,499.70 = 5,221.40 : x
  2. Step 2: Convert to fraction form
    13,007.12/19,499.70 = 5,221.40/x
  3. Step 3: Cross multiply
    13,007.12x = 19,499.70 × 5,221.40
  4. Step 4: Simplify right side
    13,007.12x = 101,815,733.58
  5. Step 5: Solve for x
    x = 101,815,733.58/13,007.12
  6. Step 6: Final answer
    x = 7,827.69

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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.