Home / 12,885.87-17,818.29-10,228.67

Finding the Fourth Proportional to 12,885.87, 17,818.29 and 10,228.67

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Solution

The fourth proportional to 12,885.87, 17,818.29 and 10,228.67 is: 14,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.87 : 17,818.29 = 10,228.67 : x
  2. Step 2: Convert to fraction form
    12,885.87/17,818.29 = 10,228.67/x
  3. Step 3: Cross multiply
    12,885.87x = 17,818.29 × 10,228.67
  4. Step 4: Simplify right side
    12,885.87x = 182,257,319.28
  5. Step 5: Solve for x
    x = 182,257,319.28/12,885.87
  6. Step 6: Final answer
    x = 14,143.97

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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.