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Finding the Fourth Proportional to 28,762.96, 43,144.68 and 7,988.08

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Solution

The fourth proportional to 28,762.96, 43,144.68 and 7,988.08 is: 11,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.96 : 43,144.68 = 7,988.08 : x
  2. Step 2: Convert to fraction form
    28,762.96/43,144.68 = 7,988.08/x
  3. Step 3: Cross multiply
    28,762.96x = 43,144.68 × 7,988.08
  4. Step 4: Simplify right side
    28,762.96x = 344,643,155.41
  5. Step 5: Solve for x
    x = 344,643,155.41/28,762.96
  6. Step 6: Final answer
    x = 11,982.19

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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.