Home / 30,541.47-45,757.80-18,689.43

Finding the Fourth Proportional to 30,541.47, 45,757.80 and 18,689.43

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Solution

The fourth proportional to 30,541.47, 45,757.80 and 18,689.43 is: 28,000.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.47 : 45,757.80 = 18,689.43 : x
  2. Step 2: Convert to fraction form
    30,541.47/45,757.80 = 18,689.43/x
  3. Step 3: Cross multiply
    30,541.47x = 45,757.80 × 18,689.43
  4. Step 4: Simplify right side
    30,541.47x = 855,187,200.05
  5. Step 5: Solve for x
    x = 855,187,200.05/30,541.47
  6. Step 6: Final answer
    x = 28,000.85

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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.