Home / 30,730.48-42,414.96-20,113.93

Finding the Fourth Proportional to 30,730.48, 42,414.96 and 20,113.93

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Solution

The fourth proportional to 30,730.48, 42,414.96 and 20,113.93 is: 27,761.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730.48 : 42,414.96 = 20,113.93 : x
  2. Step 2: Convert to fraction form
    30,730.48/42,414.96 = 20,113.93/x
  3. Step 3: Cross multiply
    30,730.48x = 42,414.96 × 20,113.93
  4. Step 4: Simplify right side
    30,730.48x = 853,131,536.39
  5. Step 5: Solve for x
    x = 853,131,536.39/30,730.48
  6. Step 6: Final answer
    x = 27,761.74

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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.