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Finding the Fourth Proportional to 28,404.30, 42,606.45 and 7,344.30

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Solution

The fourth proportional to 28,404.30, 42,606.45 and 7,344.30 is: 11,016.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.30 : 42,606.45 = 7,344.30 : x
  2. Step 2: Convert to fraction form
    28,404.30/42,606.45 = 7,344.30/x
  3. Step 3: Cross multiply
    28,404.30x = 42,606.45 × 7,344.30
  4. Step 4: Simplify right side
    28,404.30x = 312,914,550.74
  5. Step 5: Solve for x
    x = 312,914,550.74/28,404.30
  6. Step 6: Final answer
    x = 11,016.45

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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.