Home / 20,834.60-28,721.86-14,855.90

Finding the Fourth Proportional to 20,834.60, 28,721.86 and 14,855.90

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Solution

The fourth proportional to 20,834.60, 28,721.86 and 14,855.90 is: 20,479.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.60 : 28,721.86 = 14,855.90 : x
  2. Step 2: Convert to fraction form
    20,834.60/28,721.86 = 14,855.90/x
  3. Step 3: Cross multiply
    20,834.60x = 28,721.86 × 14,855.90
  4. Step 4: Simplify right side
    20,834.60x = 426,688,899.22
  5. Step 5: Solve for x
    x = 426,688,899.22/20,834.60
  6. Step 6: Final answer
    x = 20,479.83

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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.