Home / 20,764.08-28,644.47-13,590.84

Finding the Fourth Proportional to 20,764.08, 28,644.47 and 13,590.84

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Solution

The fourth proportional to 20,764.08, 28,644.47 and 13,590.84 is: 18,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.08 : 28,644.47 = 13,590.84 : x
  2. Step 2: Convert to fraction form
    20,764.08/28,644.47 = 13,590.84/x
  3. Step 3: Cross multiply
    20,764.08x = 28,644.47 × 13,590.84
  4. Step 4: Simplify right side
    20,764.08x = 389,302,408.65
  5. Step 5: Solve for x
    x = 389,302,408.65/20,764.08
  6. Step 6: Final answer
    x = 18,748.84

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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.