Home / 28,621.28-39,493.68-15,874.38

Finding the Fourth Proportional to 28,621.28, 39,493.68 and 15,874.38

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Solution

The fourth proportional to 28,621.28, 39,493.68 and 15,874.38 is: 21,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.28 : 39,493.68 = 15,874.38 : x
  2. Step 2: Convert to fraction form
    28,621.28/39,493.68 = 15,874.38/x
  3. Step 3: Cross multiply
    28,621.28x = 39,493.68 × 15,874.38
  4. Step 4: Simplify right side
    28,621.28x = 626,937,624.39
  5. Step 5: Solve for x
    x = 626,937,624.39/28,621.28
  6. Step 6: Final answer
    x = 21,904.60

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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.