Home / 28,142.72-42,208.32-10,602.88

Finding the Fourth Proportional to 28,142.72, 42,208.32 and 10,602.88

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Solution

The fourth proportional to 28,142.72, 42,208.32 and 10,602.88 is: 15,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.72 : 42,208.32 = 10,602.88 : x
  2. Step 2: Convert to fraction form
    28,142.72/42,208.32 = 10,602.88/x
  3. Step 3: Cross multiply
    28,142.72x = 42,208.32 × 10,602.88
  4. Step 4: Simplify right side
    28,142.72x = 447,529,751.96
  5. Step 5: Solve for x
    x = 447,529,751.96/28,142.72
  6. Step 6: Final answer
    x = 15,902.15

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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.