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Finding the Fourth Proportional to 30,454.55, 42,000 and 19,125.08

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Solution

The fourth proportional to 30,454.55, 42,000 and 19,125.08 is: 26,375.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,454.55 : 42,000 = 19,125.08 : x
  2. Step 2: Convert to fraction form
    30,454.55/42,000 = 19,125.08/x
  3. Step 3: Cross multiply
    30,454.55x = 42,000 × 19,125.08
  4. Step 4: Simplify right side
    30,454.55x = 803,253,150
  5. Step 5: Solve for x
    x = 803,253,150/30,454.55
  6. Step 6: Final answer
    x = 26,375.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.