Home / 12,859.10-19,235.34-12,071.78

Finding the Fourth Proportional to 12,859.10, 19,235.34 and 12,071.78

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Solution

The fourth proportional to 12,859.10, 19,235.34 and 12,071.78 is: 18,057.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.10 : 19,235.34 = 12,071.78 : x
  2. Step 2: Convert to fraction form
    12,859.10/19,235.34 = 12,071.78/x
  3. Step 3: Cross multiply
    12,859.10x = 19,235.34 × 12,071.78
  4. Step 4: Simplify right side
    12,859.10x = 232,204,792.71
  5. Step 5: Solve for x
    x = 232,204,792.71/12,859.10
  6. Step 6: Final answer
    x = 18,057.62

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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.