Home / 30,520.78-45,552.34-28,527.88

Finding the Fourth Proportional to 30,520.78, 45,552.34 and 28,527.88

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Solution

The fourth proportional to 30,520.78, 45,552.34 and 28,527.88 is: 42,577.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.78 : 45,552.34 = 28,527.88 : x
  2. Step 2: Convert to fraction form
    30,520.78/45,552.34 = 28,527.88/x
  3. Step 3: Cross multiply
    30,520.78x = 45,552.34 × 28,527.88
  4. Step 4: Simplify right side
    30,520.78x = 1,299,511,689.24
  5. Step 5: Solve for x
    x = 1,299,511,689.24/30,520.78
  6. Step 6: Final answer
    x = 42,577.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.