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Finding the Fourth Proportional to 30,357.59, 45,539.10 and 8,170.47

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Solution

The fourth proportional to 30,357.59, 45,539.10 and 8,170.47 is: 12,256.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.59 : 45,539.10 = 8,170.47 : x
  2. Step 2: Convert to fraction form
    30,357.59/45,539.10 = 8,170.47/x
  3. Step 3: Cross multiply
    30,357.59x = 45,539.10 × 8,170.47
  4. Step 4: Simplify right side
    30,357.59x = 372,075,850.38
  5. Step 5: Solve for x
    x = 372,075,850.38/30,357.59
  6. Step 6: Final answer
    x = 12,256.44

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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.