Home / 20,545.98-28,323.99-13,819.74

Finding the Fourth Proportional to 20,545.98, 28,323.99 and 13,819.74

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Solution

The fourth proportional to 20,545.98, 28,323.99 and 13,819.74 is: 19,051.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.98 : 28,323.99 = 13,819.74 : x
  2. Step 2: Convert to fraction form
    20,545.98/28,323.99 = 13,819.74/x
  3. Step 3: Cross multiply
    20,545.98x = 28,323.99 × 13,819.74
  4. Step 4: Simplify right side
    20,545.98x = 391,430,177.56
  5. Step 5: Solve for x
    x = 391,430,177.56/20,545.98
  6. Step 6: Final answer
    x = 19,051.42

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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.