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Finding the Fourth Proportional to 30,387.76, 45,581.34 and 9,611.26

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Solution

The fourth proportional to 30,387.76, 45,581.34 and 9,611.26 is: 14,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.76 : 45,581.34 = 9,611.26 : x
  2. Step 2: Convert to fraction form
    30,387.76/45,581.34 = 9,611.26/x
  3. Step 3: Cross multiply
    30,387.76x = 45,581.34 × 9,611.26
  4. Step 4: Simplify right side
    30,387.76x = 438,094,109.89
  5. Step 5: Solve for x
    x = 438,094,109.89/30,387.76
  6. Step 6: Final answer
    x = 14,416.80

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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.