Home / 15,523.94-21,419.70-8,809.04

Finding the Fourth Proportional to 15,523.94, 21,419.70 and 8,809.04

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Solution

The fourth proportional to 15,523.94, 21,419.70 and 8,809.04 is: 12,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.94 : 21,419.70 = 8,809.04 : x
  2. Step 2: Convert to fraction form
    15,523.94/21,419.70 = 8,809.04/x
  3. Step 3: Cross multiply
    15,523.94x = 21,419.70 × 8,809.04
  4. Step 4: Simplify right side
    15,523.94x = 188,686,994.09
  5. Step 5: Solve for x
    x = 188,686,994.09/15,523.94
  6. Step 6: Final answer
    x = 12,154.58

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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.