Home / 21,673.79-32,515.23-12,318.14

Finding the Fourth Proportional to 21,673.79, 32,515.23 and 12,318.14

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Solution

The fourth proportional to 21,673.79, 32,515.23 and 12,318.14 is: 18,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,673.79 : 32,515.23 = 12,318.14 : x
  2. Step 2: Convert to fraction form
    21,673.79/32,515.23 = 12,318.14/x
  3. Step 3: Cross multiply
    21,673.79x = 32,515.23 × 12,318.14
  4. Step 4: Simplify right side
    21,673.79x = 400,527,155.27
  5. Step 5: Solve for x
    x = 400,527,155.27/21,673.79
  6. Step 6: Final answer
    x = 18,479.79

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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.