Home / 13,011.36-19,521.45-4,128.15

Finding the Fourth Proportional to 13,011.36, 19,521.45 and 4,128.15

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Solution

The fourth proportional to 13,011.36, 19,521.45 and 4,128.15 is: 6,193.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.36 : 19,521.45 = 4,128.15 : x
  2. Step 2: Convert to fraction form
    13,011.36/19,521.45 = 4,128.15/x
  3. Step 3: Cross multiply
    13,011.36x = 19,521.45 × 4,128.15
  4. Step 4: Simplify right side
    13,011.36x = 80,587,473.82
  5. Step 5: Solve for x
    x = 80,587,473.82/13,011.36
  6. Step 6: Final answer
    x = 6,193.62

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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.