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Finding the Fourth Proportional to 30,352.96, 45,486.88 and 11,612.80

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Solution

The fourth proportional to 30,352.96, 45,486.88 and 11,612.80 is: 17,402.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,352.96 : 45,486.88 = 11,612.80 : x
  2. Step 2: Convert to fraction form
    30,352.96/45,486.88 = 11,612.80/x
  3. Step 3: Cross multiply
    30,352.96x = 45,486.88 × 11,612.80
  4. Step 4: Simplify right side
    30,352.96x = 528,230,040.06
  5. Step 5: Solve for x
    x = 528,230,040.06/30,352.96
  6. Step 6: Final answer
    x = 17,402.92

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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.