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Finding the Fourth Proportional to 28,113.84, 42,169.92 and 7,337.34

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Solution

The fourth proportional to 28,113.84, 42,169.92 and 7,337.34 is: 11,005.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.84 : 42,169.92 = 7,337.34 : x
  2. Step 2: Convert to fraction form
    28,113.84/42,169.92 = 7,337.34/x
  3. Step 3: Cross multiply
    28,113.84x = 42,169.92 × 7,337.34
  4. Step 4: Simplify right side
    28,113.84x = 309,415,040.81
  5. Step 5: Solve for x
    x = 309,415,040.81/28,113.84
  6. Step 6: Final answer
    x = 11,005.79

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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.