Home / 10,621.84-15,934.68-4,378.38

Finding the Fourth Proportional to 10,621.84, 15,934.68 and 4,378.38

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Solution

The fourth proportional to 10,621.84, 15,934.68 and 4,378.38 is: 6,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.84 : 15,934.68 = 4,378.38 : x
  2. Step 2: Convert to fraction form
    10,621.84/15,934.68 = 4,378.38/x
  3. Step 3: Cross multiply
    10,621.84x = 15,934.68 × 4,378.38
  4. Step 4: Simplify right side
    10,621.84x = 69,768,084.22
  5. Step 5: Solve for x
    x = 69,768,084.22/10,621.84
  6. Step 6: Final answer
    x = 6,568.36

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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.