Home / 20,884.74-31,319.81-8,401.53

Finding the Fourth Proportional to 20,884.74, 31,319.81 and 8,401.53

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Solution

The fourth proportional to 20,884.74, 31,319.81 and 8,401.53 is: 12,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.74 : 31,319.81 = 8,401.53 : x
  2. Step 2: Convert to fraction form
    20,884.74/31,319.81 = 8,401.53/x
  3. Step 3: Cross multiply
    20,884.74x = 31,319.81 × 8,401.53
  4. Step 4: Simplify right side
    20,884.74x = 263,134,166.71
  5. Step 5: Solve for x
    x = 263,134,166.71/20,884.74
  6. Step 6: Final answer
    x = 12,599.35

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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.