Home / 12,660.40-18,975.21-9,530.32

Finding the Fourth Proportional to 12,660.40, 18,975.21 and 9,530.32

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Solution

The fourth proportional to 12,660.40, 18,975.21 and 9,530.32 is: 14,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.40 : 18,975.21 = 9,530.32 : x
  2. Step 2: Convert to fraction form
    12,660.40/18,975.21 = 9,530.32/x
  3. Step 3: Cross multiply
    12,660.40x = 18,975.21 × 9,530.32
  4. Step 4: Simplify right side
    12,660.40x = 180,839,823.37
  5. Step 5: Solve for x
    x = 180,839,823.37/12,660.40
  6. Step 6: Final answer
    x = 14,283.89

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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.