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Finding the Fourth Proportional to 30,338.88, 45,489.30 and 9,271.91

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Solution

The fourth proportional to 30,338.88, 45,489.30 and 9,271.91 is: 13,902.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,338.88 : 45,489.30 = 9,271.91 : x
  2. Step 2: Convert to fraction form
    30,338.88/45,489.30 = 9,271.91/x
  3. Step 3: Cross multiply
    30,338.88x = 45,489.30 × 9,271.91
  4. Step 4: Simplify right side
    30,338.88x = 421,772,774.52
  5. Step 5: Solve for x
    x = 421,772,774.52/30,338.88
  6. Step 6: Final answer
    x = 13,902.06

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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.