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Finding the Fourth Proportional to 30,351.20, 45,526.80 and 9,576.80

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Solution

The fourth proportional to 30,351.20, 45,526.80 and 9,576.80 is: 14,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.20 : 45,526.80 = 9,576.80 : x
  2. Step 2: Convert to fraction form
    30,351.20/45,526.80 = 9,576.80/x
  3. Step 3: Cross multiply
    30,351.20x = 45,526.80 × 9,576.80
  4. Step 4: Simplify right side
    30,351.20x = 436,001,058.24
  5. Step 5: Solve for x
    x = 436,001,058.24/30,351.20
  6. Step 6: Final answer
    x = 14,365.20

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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.