Home / 20,587.99-28,412.84-12,524.80

Finding the Fourth Proportional to 20,587.99, 28,412.84 and 12,524.80

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Solution

The fourth proportional to 20,587.99, 28,412.84 and 12,524.80 is: 17,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.99 : 28,412.84 = 12,524.80 : x
  2. Step 2: Convert to fraction form
    20,587.99/28,412.84 = 12,524.80/x
  3. Step 3: Cross multiply
    20,587.99x = 28,412.84 × 12,524.80
  4. Step 4: Simplify right side
    20,587.99x = 355,865,138.43
  5. Step 5: Solve for x
    x = 355,865,138.43/20,587.99
  6. Step 6: Final answer
    x = 17,285.08

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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.