Home / 31,395.62-43,337.34-20,788.67

Finding the Fourth Proportional to 31,395.62, 43,337.34 and 20,788.67

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Solution

The fourth proportional to 31,395.62, 43,337.34 and 20,788.67 is: 28,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395.62 : 43,337.34 = 20,788.67 : x
  2. Step 2: Convert to fraction form
    31,395.62/43,337.34 = 20,788.67/x
  3. Step 3: Cross multiply
    31,395.62x = 43,337.34 × 20,788.67
  4. Step 4: Simplify right side
    31,395.62x = 900,925,443.25
  5. Step 5: Solve for x
    x = 900,925,443.25/31,395.62
  6. Step 6: Final answer
    x = 28,695.90

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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.