Home / 28,504.84-42,731.26-10,987.72

Finding the Fourth Proportional to 28,504.84, 42,731.26 and 10,987.72

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Solution

The fourth proportional to 28,504.84, 42,731.26 and 10,987.72 is: 16,471.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.84 : 42,731.26 = 10,987.72 : x
  2. Step 2: Convert to fraction form
    28,504.84/42,731.26 = 10,987.72/x
  3. Step 3: Cross multiply
    28,504.84x = 42,731.26 × 10,987.72
  4. Step 4: Simplify right side
    28,504.84x = 469,519,120.13
  5. Step 5: Solve for x
    x = 469,519,120.13/28,504.84
  6. Step 6: Final answer
    x = 16,471.56

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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.