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Finding the Fourth Proportional to 30,287.34, 45,401.76 and 15,503.22

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Solution

The fourth proportional to 30,287.34, 45,401.76 and 15,503.22 is: 23,239.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.34 : 45,401.76 = 15,503.22 : x
  2. Step 2: Convert to fraction form
    30,287.34/45,401.76 = 15,503.22/x
  3. Step 3: Cross multiply
    30,287.34x = 45,401.76 × 15,503.22
  4. Step 4: Simplify right side
    30,287.34x = 703,873,473.67
  5. Step 5: Solve for x
    x = 703,873,473.67/30,287.34
  6. Step 6: Final answer
    x = 23,239.86

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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.