Home / 28,148.94-42,179.64-10,609.20

Finding the Fourth Proportional to 28,148.94, 42,179.64 and 10,609.20

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Solution

The fourth proportional to 28,148.94, 42,179.64 and 10,609.20 is: 15,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.94 : 42,179.64 = 10,609.20 : x
  2. Step 2: Convert to fraction form
    28,148.94/42,179.64 = 10,609.20/x
  3. Step 3: Cross multiply
    28,148.94x = 42,179.64 × 10,609.20
  4. Step 4: Simplify right side
    28,148.94x = 447,492,236.69
  5. Step 5: Solve for x
    x = 447,492,236.69/28,148.94
  6. Step 6: Final answer
    x = 15,897.30

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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.