Home / 12,438.28-18,657.69-4,642.84

Finding the Fourth Proportional to 12,438.28, 18,657.69 and 4,642.84

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Solution

The fourth proportional to 12,438.28, 18,657.69 and 4,642.84 is: 6,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.28 : 18,657.69 = 4,642.84 : x
  2. Step 2: Convert to fraction form
    12,438.28/18,657.69 = 4,642.84/x
  3. Step 3: Cross multiply
    12,438.28x = 18,657.69 × 4,642.84
  4. Step 4: Simplify right side
    12,438.28x = 86,624,669.44
  5. Step 5: Solve for x
    x = 86,624,669.44/12,438.28
  6. Step 6: Final answer
    x = 6,964.36

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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.