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Finding the Fourth Proportional to 30,393.88, 45,572.80 and 10,396.30

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Solution

The fourth proportional to 30,393.88, 45,572.80 and 10,396.30 is: 15,588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.88 : 45,572.80 = 10,396.30 : x
  2. Step 2: Convert to fraction form
    30,393.88/45,572.80 = 10,396.30/x
  3. Step 3: Cross multiply
    30,393.88x = 45,572.80 × 10,396.30
  4. Step 4: Simplify right side
    30,393.88x = 473,788,500.64
  5. Step 5: Solve for x
    x = 473,788,500.64/30,393.88
  6. Step 6: Final answer
    x = 15,588.29

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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.