Home / 12,958.71-19,438.37-4,639.30

Finding the Fourth Proportional to 12,958.71, 19,438.37 and 4,639.30

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Solution

The fourth proportional to 12,958.71, 19,438.37 and 4,639.30 is: 6,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.71 : 19,438.37 = 4,639.30 : x
  2. Step 2: Convert to fraction form
    12,958.71/19,438.37 = 4,639.30/x
  3. Step 3: Cross multiply
    12,958.71x = 19,438.37 × 4,639.30
  4. Step 4: Simplify right side
    12,958.71x = 90,180,358.15
  5. Step 5: Solve for x
    x = 90,180,358.15/12,958.71
  6. Step 6: Final answer
    x = 6,959.05

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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.