Home / 14,621.68-21,928.08-12,282.40

Finding the Fourth Proportional to 14,621.68, 21,928.08 and 12,282.40

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Solution

The fourth proportional to 14,621.68, 21,928.08 and 12,282.40 is: 18,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,621.68 : 21,928.08 = 12,282.40 : x
  2. Step 2: Convert to fraction form
    14,621.68/21,928.08 = 12,282.40/x
  3. Step 3: Cross multiply
    14,621.68x = 21,928.08 × 12,282.40
  4. Step 4: Simplify right side
    14,621.68x = 269,329,449.79
  5. Step 5: Solve for x
    x = 269,329,449.79/14,621.68
  6. Step 6: Final answer
    x = 18,419.87

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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.