Home / 13,859.71-19,120.98-8,545.30

Finding the Fourth Proportional to 13,859.71, 19,120.98 and 8,545.30

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Solution

The fourth proportional to 13,859.71, 19,120.98 and 8,545.30 is: 11,789.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.71 : 19,120.98 = 8,545.30 : x
  2. Step 2: Convert to fraction form
    13,859.71/19,120.98 = 8,545.30/x
  3. Step 3: Cross multiply
    13,859.71x = 19,120.98 × 8,545.30
  4. Step 4: Simplify right side
    13,859.71x = 163,394,515.47
  5. Step 5: Solve for x
    x = 163,394,515.47/13,859.71
  6. Step 6: Final answer
    x = 11,789.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.