Home / 13,954.20-20,931.91-6,937.58

Finding the Fourth Proportional to 13,954.20, 20,931.91 and 6,937.58

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Solution

The fourth proportional to 13,954.20, 20,931.91 and 6,937.58 is: 10,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.20 : 20,931.91 = 6,937.58 : x
  2. Step 2: Convert to fraction form
    13,954.20/20,931.91 = 6,937.58/x
  3. Step 3: Cross multiply
    13,954.20x = 20,931.91 × 6,937.58
  4. Step 4: Simplify right side
    13,954.20x = 145,216,800.18
  5. Step 5: Solve for x
    x = 145,216,800.18/13,954.20
  6. Step 6: Final answer
    x = 10,406.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.