Home / 20,657.86-28,498.68-12,269.50

Finding the Fourth Proportional to 20,657.86, 28,498.68 and 12,269.50

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Solution

The fourth proportional to 20,657.86, 28,498.68 and 12,269.50 is: 16,926.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.86 : 28,498.68 = 12,269.50 : x
  2. Step 2: Convert to fraction form
    20,657.86/28,498.68 = 12,269.50/x
  3. Step 3: Cross multiply
    20,657.86x = 28,498.68 × 12,269.50
  4. Step 4: Simplify right side
    20,657.86x = 349,664,554.26
  5. Step 5: Solve for x
    x = 349,664,554.26/20,657.86
  6. Step 6: Final answer
    x = 16,926.47

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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.