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Finding the Fourth Proportional to 28,628.16, 42,942.24 and 13,050.24

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Solution

The fourth proportional to 28,628.16, 42,942.24 and 13,050.24 is: 19,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.16 : 42,942.24 = 13,050.24 : x
  2. Step 2: Convert to fraction form
    28,628.16/42,942.24 = 13,050.24/x
  3. Step 3: Cross multiply
    28,628.16x = 42,942.24 × 13,050.24
  4. Step 4: Simplify right side
    28,628.16x = 560,406,538.14
  5. Step 5: Solve for x
    x = 560,406,538.14/28,628.16
  6. Step 6: Final answer
    x = 19,575.36

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Similar ratio
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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.