Home / 15,522.54-21,421.15-8,448.94

Finding the Fourth Proportional to 15,522.54, 21,421.15 and 8,448.94

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Solution

The fourth proportional to 15,522.54, 21,421.15 and 8,448.94 is: 11,659.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.54 : 21,421.15 = 8,448.94 : x
  2. Step 2: Convert to fraction form
    15,522.54/21,421.15 = 8,448.94/x
  3. Step 3: Cross multiply
    15,522.54x = 21,421.15 × 8,448.94
  4. Step 4: Simplify right side
    15,522.54x = 180,986,011.08
  5. Step 5: Solve for x
    x = 180,986,011.08/15,522.54
  6. Step 6: Final answer
    x = 11,659.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.