Home / 12,658.32-18,989.88-5,258.76

Finding the Fourth Proportional to 12,658.32, 18,989.88 and 5,258.76

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Solution

The fourth proportional to 12,658.32, 18,989.88 and 5,258.76 is: 7,889.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.32 : 18,989.88 = 5,258.76 : x
  2. Step 2: Convert to fraction form
    12,658.32/18,989.88 = 5,258.76/x
  3. Step 3: Cross multiply
    12,658.32x = 18,989.88 × 5,258.76
  4. Step 4: Simplify right side
    12,658.32x = 99,863,221.35
  5. Step 5: Solve for x
    x = 99,863,221.35/12,658.32
  6. Step 6: Final answer
    x = 7,889.14

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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.