Home / 34,555.90-47,687.66-20,408.71

Finding the Fourth Proportional to 34,555.90, 47,687.66 and 20,408.71

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Solution

The fourth proportional to 34,555.90, 47,687.66 and 20,408.71 is: 28,164.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,555.90 : 47,687.66 = 20,408.71 : x
  2. Step 2: Convert to fraction form
    34,555.90/47,687.66 = 20,408.71/x
  3. Step 3: Cross multiply
    34,555.90x = 47,687.66 × 20,408.71
  4. Step 4: Simplify right side
    34,555.90x = 973,243,623.52
  5. Step 5: Solve for x
    x = 973,243,623.52/34,555.90
  6. Step 6: Final answer
    x = 28,164.33

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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.